Abstract

Contribution of plasma oscillation to the broadband terahertz (THz) emission is revealed by interacting two-color (ω/2ω) laser pulses with a supersonic jet of nitrogen molecules. Temporal and spectral shifts of THz waves are observed as the plasma density varies. The former owes to the changing refractive index of the THz waves, and the latter correlates to the varying plasma frequency. Simulation of considering photocurrents, plasma oscillation and decaying plasma density explains the broadband THz spectrum and the varying THz spectrum. Plasma oscillation only contributes to THz waves at low plasma density owing to negligible plasma absorption. At the longer medium or higher density, the combining effects of plasma oscillation and absorption results in the observed low-frequency broadband THz spectra.

© 2016 Optical Society of America

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  1. K. Reimann, “Terahertz radiation: A table-top source of strong pulses,” Nat. Photonics 2(10), 596–597 (2008).
    [Crossref]
  2. S. I. Mitryukovskiy, Y. Liu, B. Prade, A. Houard, and A. Mysyrowicz, “Coherent synthesis of terahertz radiation from femtosecond laser filaments in air,” Appl. Phys. Lett. 102(22), 221107 (2013).
    [Crossref]
  3. T. I. Oh, Y. S. You, N. Jhajj, E. W. Rosenthal, H. M. Milchberg, and K. Y. Kim, “Intense terahertz generation in two-color laser filamentation: energy scaling with terawatt laser systems,” New J. Phys. 15(7), 075002 (2013).
    [Crossref]
  4. T. I. Oh, Y. J. Yoo, Y. S. You, and K. Y. Kim, “Generation of strong terahertz fields exceeding 8 MV/cm at 1 kHz and real-time beam profiling,” Appl. Phys. Lett. 105(4), 041103 (2014).
    [Crossref]
  5. N. Karpowicz and X.-C. Zhang, “Coherent terahertz echo of tunnel ionization in gases,” Phys. Rev. Lett. 102(9), 093001 (2009).
    [Crossref] [PubMed]
  6. M. Li, W. Li, Y. Shi, P. Lu, H. Pan, and H. Zeng, “Verification of the physical mechanism of THz generation by dual-color ultrashort laser pulses,” Appl. Phys. Lett. 101(16), 161104 (2012).
    [Crossref]
  7. P. G. D. Martínez, I. Babushkin, L. Bergé, S. Skupin, E. Cabrera-Granado, C. Köhler, U. Morgner, A. Husakou, and J. Herrmann, “Boosting terahertz generation in laser-field ionized gases using a sawtooth wave shape,” Phys. Rev. Lett. 114(18), 183901 (2015).
    [Crossref] [PubMed]
  8. V. A. Andreeva, O. G. Kosareva, N. A. Panov, D. E. Shipilo, P. M. Solyankin, M. N. Esaulkov, P. González de Alaiza Martínez, A. P. Shkurinov, V. A. Makarov, L. Bergé, and S. L. Chin, “Ultrabroad terahertz spectrum generation from an air-based filament plasma,” Phys. Rev. Lett. 116(6), 063902 (2016).
    [Crossref] [PubMed]
  9. K. Y. Kim, J. H. Glownia, A. J. Taylor, and G. Rodriguez, “Terahertz emission from ultrafast ionizing air in symmetry-broken laser fields,” Opt. Express 15(8), 4577–4584 (2007).
    [Crossref] [PubMed]
  10. T.-J. Wang, S. Yuan, Y. Chen, J.-F. Daigle, C. Marceau, F. Théberge, M. Châteauneuf, J. Dubois, and S. L. Chin, “Toward remote high energy terahertz generation,” Appl. Phys. Lett. 97, 111108 (2010).
    [Crossref]
  11. L. Bergé, S. Skupin, C. Köhler, I. Babushkin, and J. Herrmann, “3D numerical simulations of THz generation by two-color laser filaments,” Phys. Rev. Lett. 110(7), 073901 (2013).
    [Crossref] [PubMed]
  12. I. Babushkin, S. Skupin, A. Husakou, C. Köhler, E. Cabrera-Granado, L. Bergé, and J. Herrmann, “Tailoring terahertz radiation by controlling tunnel photoionization events in gases,” New J. Phys. 13(12), 123029 (2011).
    [Crossref]
  13. H. Wen and A. M. Lindenberg, “Coherent terahertz polarization control through manipulation of electron trajectories,” Phys. Rev. Lett. 103(2), 023902 (2009).
    [Crossref] [PubMed]
  14. X. Lu and X.-C. Zhang, “Generation of elliptically polarized terahertz waves from laser-induced plasma with double helix electrodes,” Phys. Rev. Lett. 108(12), 123903 (2012).
    [Crossref] [PubMed]
  15. A. V. Borodin, N. A. Panov, O. G. Kosareva, V. A. Andreeva, M. N. Esaulkov, V. A. Makarov, A. P. Shkurinov, S. L. Chin, and X.-C. Zhang, “Transformation of terahertz spectra emitted from dual-frequency femtosecond pulse interaction in gases,” Opt. Lett. 38(11), 1906–1908 (2013).
    [Crossref] [PubMed]
  16. T. Balčiūnas, D. Lorenc, M. Ivanov, O. Smirnova, A. M. Zheltikov, D. Dietze, K. Unterrainer, T. Rathje, G. G. Paulus, A. Baltuška, and S. Haessler, “CEP-stable tunable THz-emission originating from laser-waveform-controlled sub-cycle plasma-electron bursts,” Opt. Express 23(12), 15278–15289 (2015).
    [Crossref] [PubMed]
  17. Z.-M. Sheng, K. Mima, J. Zhang, and H. Sanuki, “Emission of electromagnetic pulses from laser wakefields through linear mode conversion,” Phys. Rev. Lett. 94(9), 095003 (2005).
    [Crossref] [PubMed]
  18. W.-M. Wang, Z.-M. Sheng, H.-C. Wu, M. Chen, C. Li, J. Zhang, and K. Mima, “Strong terahertz pulse generation by chirped laser pulses in tenuous gases,” Opt. Express 16(21), 16999–17006 (2008).
    [Crossref] [PubMed]
  19. A. Debayle, L. Gremillet, L. Bergé, and Ch. Köhler, “Analytical model for THz emissions induced by laser-gas interaction,” Opt. Express 22(11), 13691–13709 (2014).
    [Crossref] [PubMed]
  20. V. B. Gildenburg and N. V. Vvedenskii, “Optical-to-THz wave conversion via excitation of plasma oscillations in the tunneling-ionization process,” Phys. Rev. Lett. 98(24), 245002 (2007).
    [Crossref] [PubMed]
  21. C. S. Liu and V. K. Tripathi, “Tunable terahertz radiation from a tunnel ionized magnetized plasma cylinder,” J. Appl. Phys. 105(1), 013313 (2009).
    [Crossref]
  22. N. V. Vvedenskii, A. I. Korytin, V. A. Kostin, A. A. Murzanev, A. A. Silaev, and A. N. Stepanov, “Two-color laser-plasma generation of terahertz radiation using a frequency-tunable half harmonic of a femtosecond pulse,” Phys. Rev. Lett. 112(5), 055004 (2014).
    [Crossref] [PubMed]
  23. G. Scoles, Atomic and Molecular Beam Methods, Vol. 1 (Oxford University Press, 1988).
  24. J. Dai, N. Karpowicz, and X.-C. Zhang, “Coherent polarization control of terahertz waves generated from two-color laser-induced gas plasma,” Phys. Rev. Lett. 103(2), 023001 (2009).
    [Crossref] [PubMed]
  25. A. Debayle, P. G. D. Martínez, L. Gremillet, and L. Bergé, “Nonmonotonic increase in laser-driven THz emissions through multiple ionization events,” Phys. Rev. A 91(4), 041801 (2015).
    [Crossref]
  26. P. C. M. Planken, H. K. Nienhuys, H. J. Bakker, and T. Wenckebach, “Measurement and calculation of the orientation dependence of terahertz pulse detection in ZnTe,” J. Opt. Soc. Am. B 18(3), 313–317 (2001).
    [Crossref]
  27. P. González de Alaiza Martínez, X. Davoine, A. Debayle, L. Gremillet, and L. Bergé, “Terahertz radiation driven by two-color laser pulses at near-relativistic intensities: Competition between photoionization and wakefield effects,” Sci. Rep. 6, 26743 (2016).
    [Crossref] [PubMed]
  28. L. A. Johnson, J. P. Palastro, T. M. Antonsen, and K. Y. Kim, “THz generation by optical Cherenkov emission from ionizing two-color laser pulses,” Phys. Rev. A 88(6), 063804 (2013).
    [Crossref]
  29. J. D. Jackson, Classical Electrodynamics (Berkeley, 1998), Chap. 7.
  30. R. P. Feynman, R. B. Leighton, and M. Sands, Feynman Lectures on Physics (Addison–Wesley, 1964), Vol. 2, Chap. 32.
  31. E. R. Peck and B. N. Khanna, “Dispersion of nitrogen,” J. Opt. Soc. Am. 56(8), 1059–1063 (1966).
    [Crossref]
  32. M. V. Ammosov, N. B. Delone, and V. P. Krainov, “Tunnel ionization of complex atoms and of atomic ions in an alternating electromagnetic field,” Sov. Phys. JETP 64, 1191–1194 (1986).
  33. D. J. Cook and R. M. Hochstrasser, “Intense terahertz pulses by four-wave rectification in air,” Opt. Lett. 25(16), 1210–1212 (2000).
    [Crossref] [PubMed]
  34. J. Bernhardt, W. Liu, S. L. Chin, and R. Sauerbrey, “Pressure independence of intensity clamping during filamentation: theory and experiment,” Appl. Phys. B 91(1), 45–48 (2008).
    [Crossref]
  35. H. Yang, P. Liu, H. Lu, X. Ge, R. Li, and Z. Xu, “Time-evolution of electron density in plasma measured by high-order harmonic generation,” Opt. Express 20(17), 19449–19454 (2012).
    [Crossref] [PubMed]
  36. S. Tzortzakis, B. Prade, M. Franco, and A. Mysyrowicz, “Time-evolution of the plasma channel at the trail of a self-guided IR femtosecond laser pulse in air,” Opt. Commun. 181(1-3), 123–127 (2000).
    [Crossref]
  37. R. B. Bryan, R. B. Holt, and O. Oldenberg, “Recombination and afterglow in nitrogen and oxygen,” Phys. Rev. 106(1), 83–86 (1957).
    [Crossref]
  38. E. Constant, D. Garzella, P. Breger, E. Mevel, C. Dorrer, C. Le Blanc, F. Salin, and P. Agostini, “Optimizing high harmonic generation in absorbing gases: Model and experiment,” Phys. Rev. Lett. 82(8), 1668–1671 (1999).
    [Crossref]
  39. V. Blank, M. D. Thomson, and H. G. Roskos, “Spatio-spectral characteristics of ultra-broadband THz emission from two-colour photoexcited gas plasmas and their impact for nonlinear spectroscopy,” New J. Phys. 15(7), 075023 (2013).
    [Crossref]
  40. Y. S. You, T. I. Oh, and K. Y. Kim, “Off-axis phase-matched terahertz emission from two-color laser-induced plasma filaments,” Phys. Rev. Lett. 109(18), 183902 (2012).
    [Crossref] [PubMed]

2016 (2)

V. A. Andreeva, O. G. Kosareva, N. A. Panov, D. E. Shipilo, P. M. Solyankin, M. N. Esaulkov, P. González de Alaiza Martínez, A. P. Shkurinov, V. A. Makarov, L. Bergé, and S. L. Chin, “Ultrabroad terahertz spectrum generation from an air-based filament plasma,” Phys. Rev. Lett. 116(6), 063902 (2016).
[Crossref] [PubMed]

P. González de Alaiza Martínez, X. Davoine, A. Debayle, L. Gremillet, and L. Bergé, “Terahertz radiation driven by two-color laser pulses at near-relativistic intensities: Competition between photoionization and wakefield effects,” Sci. Rep. 6, 26743 (2016).
[Crossref] [PubMed]

2015 (3)

A. Debayle, P. G. D. Martínez, L. Gremillet, and L. Bergé, “Nonmonotonic increase in laser-driven THz emissions through multiple ionization events,” Phys. Rev. A 91(4), 041801 (2015).
[Crossref]

P. G. D. Martínez, I. Babushkin, L. Bergé, S. Skupin, E. Cabrera-Granado, C. Köhler, U. Morgner, A. Husakou, and J. Herrmann, “Boosting terahertz generation in laser-field ionized gases using a sawtooth wave shape,” Phys. Rev. Lett. 114(18), 183901 (2015).
[Crossref] [PubMed]

T. Balčiūnas, D. Lorenc, M. Ivanov, O. Smirnova, A. M. Zheltikov, D. Dietze, K. Unterrainer, T. Rathje, G. G. Paulus, A. Baltuška, and S. Haessler, “CEP-stable tunable THz-emission originating from laser-waveform-controlled sub-cycle plasma-electron bursts,” Opt. Express 23(12), 15278–15289 (2015).
[Crossref] [PubMed]

2014 (3)

T. I. Oh, Y. J. Yoo, Y. S. You, and K. Y. Kim, “Generation of strong terahertz fields exceeding 8 MV/cm at 1 kHz and real-time beam profiling,” Appl. Phys. Lett. 105(4), 041103 (2014).
[Crossref]

N. V. Vvedenskii, A. I. Korytin, V. A. Kostin, A. A. Murzanev, A. A. Silaev, and A. N. Stepanov, “Two-color laser-plasma generation of terahertz radiation using a frequency-tunable half harmonic of a femtosecond pulse,” Phys. Rev. Lett. 112(5), 055004 (2014).
[Crossref] [PubMed]

A. Debayle, L. Gremillet, L. Bergé, and Ch. Köhler, “Analytical model for THz emissions induced by laser-gas interaction,” Opt. Express 22(11), 13691–13709 (2014).
[Crossref] [PubMed]

2013 (6)

L. A. Johnson, J. P. Palastro, T. M. Antonsen, and K. Y. Kim, “THz generation by optical Cherenkov emission from ionizing two-color laser pulses,” Phys. Rev. A 88(6), 063804 (2013).
[Crossref]

S. I. Mitryukovskiy, Y. Liu, B. Prade, A. Houard, and A. Mysyrowicz, “Coherent synthesis of terahertz radiation from femtosecond laser filaments in air,” Appl. Phys. Lett. 102(22), 221107 (2013).
[Crossref]

T. I. Oh, Y. S. You, N. Jhajj, E. W. Rosenthal, H. M. Milchberg, and K. Y. Kim, “Intense terahertz generation in two-color laser filamentation: energy scaling with terawatt laser systems,” New J. Phys. 15(7), 075002 (2013).
[Crossref]

A. V. Borodin, N. A. Panov, O. G. Kosareva, V. A. Andreeva, M. N. Esaulkov, V. A. Makarov, A. P. Shkurinov, S. L. Chin, and X.-C. Zhang, “Transformation of terahertz spectra emitted from dual-frequency femtosecond pulse interaction in gases,” Opt. Lett. 38(11), 1906–1908 (2013).
[Crossref] [PubMed]

L. Bergé, S. Skupin, C. Köhler, I. Babushkin, and J. Herrmann, “3D numerical simulations of THz generation by two-color laser filaments,” Phys. Rev. Lett. 110(7), 073901 (2013).
[Crossref] [PubMed]

V. Blank, M. D. Thomson, and H. G. Roskos, “Spatio-spectral characteristics of ultra-broadband THz emission from two-colour photoexcited gas plasmas and their impact for nonlinear spectroscopy,” New J. Phys. 15(7), 075023 (2013).
[Crossref]

2012 (4)

Y. S. You, T. I. Oh, and K. Y. Kim, “Off-axis phase-matched terahertz emission from two-color laser-induced plasma filaments,” Phys. Rev. Lett. 109(18), 183902 (2012).
[Crossref] [PubMed]

X. Lu and X.-C. Zhang, “Generation of elliptically polarized terahertz waves from laser-induced plasma with double helix electrodes,” Phys. Rev. Lett. 108(12), 123903 (2012).
[Crossref] [PubMed]

M. Li, W. Li, Y. Shi, P. Lu, H. Pan, and H. Zeng, “Verification of the physical mechanism of THz generation by dual-color ultrashort laser pulses,” Appl. Phys. Lett. 101(16), 161104 (2012).
[Crossref]

H. Yang, P. Liu, H. Lu, X. Ge, R. Li, and Z. Xu, “Time-evolution of electron density in plasma measured by high-order harmonic generation,” Opt. Express 20(17), 19449–19454 (2012).
[Crossref] [PubMed]

2011 (1)

I. Babushkin, S. Skupin, A. Husakou, C. Köhler, E. Cabrera-Granado, L. Bergé, and J. Herrmann, “Tailoring terahertz radiation by controlling tunnel photoionization events in gases,” New J. Phys. 13(12), 123029 (2011).
[Crossref]

2010 (1)

T.-J. Wang, S. Yuan, Y. Chen, J.-F. Daigle, C. Marceau, F. Théberge, M. Châteauneuf, J. Dubois, and S. L. Chin, “Toward remote high energy terahertz generation,” Appl. Phys. Lett. 97, 111108 (2010).
[Crossref]

2009 (4)

H. Wen and A. M. Lindenberg, “Coherent terahertz polarization control through manipulation of electron trajectories,” Phys. Rev. Lett. 103(2), 023902 (2009).
[Crossref] [PubMed]

N. Karpowicz and X.-C. Zhang, “Coherent terahertz echo of tunnel ionization in gases,” Phys. Rev. Lett. 102(9), 093001 (2009).
[Crossref] [PubMed]

C. S. Liu and V. K. Tripathi, “Tunable terahertz radiation from a tunnel ionized magnetized plasma cylinder,” J. Appl. Phys. 105(1), 013313 (2009).
[Crossref]

J. Dai, N. Karpowicz, and X.-C. Zhang, “Coherent polarization control of terahertz waves generated from two-color laser-induced gas plasma,” Phys. Rev. Lett. 103(2), 023001 (2009).
[Crossref] [PubMed]

2008 (3)

W.-M. Wang, Z.-M. Sheng, H.-C. Wu, M. Chen, C. Li, J. Zhang, and K. Mima, “Strong terahertz pulse generation by chirped laser pulses in tenuous gases,” Opt. Express 16(21), 16999–17006 (2008).
[Crossref] [PubMed]

J. Bernhardt, W. Liu, S. L. Chin, and R. Sauerbrey, “Pressure independence of intensity clamping during filamentation: theory and experiment,” Appl. Phys. B 91(1), 45–48 (2008).
[Crossref]

K. Reimann, “Terahertz radiation: A table-top source of strong pulses,” Nat. Photonics 2(10), 596–597 (2008).
[Crossref]

2007 (2)

K. Y. Kim, J. H. Glownia, A. J. Taylor, and G. Rodriguez, “Terahertz emission from ultrafast ionizing air in symmetry-broken laser fields,” Opt. Express 15(8), 4577–4584 (2007).
[Crossref] [PubMed]

V. B. Gildenburg and N. V. Vvedenskii, “Optical-to-THz wave conversion via excitation of plasma oscillations in the tunneling-ionization process,” Phys. Rev. Lett. 98(24), 245002 (2007).
[Crossref] [PubMed]

2005 (1)

Z.-M. Sheng, K. Mima, J. Zhang, and H. Sanuki, “Emission of electromagnetic pulses from laser wakefields through linear mode conversion,” Phys. Rev. Lett. 94(9), 095003 (2005).
[Crossref] [PubMed]

2001 (1)

2000 (2)

S. Tzortzakis, B. Prade, M. Franco, and A. Mysyrowicz, “Time-evolution of the plasma channel at the trail of a self-guided IR femtosecond laser pulse in air,” Opt. Commun. 181(1-3), 123–127 (2000).
[Crossref]

D. J. Cook and R. M. Hochstrasser, “Intense terahertz pulses by four-wave rectification in air,” Opt. Lett. 25(16), 1210–1212 (2000).
[Crossref] [PubMed]

1999 (1)

E. Constant, D. Garzella, P. Breger, E. Mevel, C. Dorrer, C. Le Blanc, F. Salin, and P. Agostini, “Optimizing high harmonic generation in absorbing gases: Model and experiment,” Phys. Rev. Lett. 82(8), 1668–1671 (1999).
[Crossref]

1986 (1)

M. V. Ammosov, N. B. Delone, and V. P. Krainov, “Tunnel ionization of complex atoms and of atomic ions in an alternating electromagnetic field,” Sov. Phys. JETP 64, 1191–1194 (1986).

1966 (1)

1957 (1)

R. B. Bryan, R. B. Holt, and O. Oldenberg, “Recombination and afterglow in nitrogen and oxygen,” Phys. Rev. 106(1), 83–86 (1957).
[Crossref]

Agostini, P.

E. Constant, D. Garzella, P. Breger, E. Mevel, C. Dorrer, C. Le Blanc, F. Salin, and P. Agostini, “Optimizing high harmonic generation in absorbing gases: Model and experiment,” Phys. Rev. Lett. 82(8), 1668–1671 (1999).
[Crossref]

Ammosov, M. V.

M. V. Ammosov, N. B. Delone, and V. P. Krainov, “Tunnel ionization of complex atoms and of atomic ions in an alternating electromagnetic field,” Sov. Phys. JETP 64, 1191–1194 (1986).

Andreeva, V. A.

V. A. Andreeva, O. G. Kosareva, N. A. Panov, D. E. Shipilo, P. M. Solyankin, M. N. Esaulkov, P. González de Alaiza Martínez, A. P. Shkurinov, V. A. Makarov, L. Bergé, and S. L. Chin, “Ultrabroad terahertz spectrum generation from an air-based filament plasma,” Phys. Rev. Lett. 116(6), 063902 (2016).
[Crossref] [PubMed]

A. V. Borodin, N. A. Panov, O. G. Kosareva, V. A. Andreeva, M. N. Esaulkov, V. A. Makarov, A. P. Shkurinov, S. L. Chin, and X.-C. Zhang, “Transformation of terahertz spectra emitted from dual-frequency femtosecond pulse interaction in gases,” Opt. Lett. 38(11), 1906–1908 (2013).
[Crossref] [PubMed]

Antonsen, T. M.

L. A. Johnson, J. P. Palastro, T. M. Antonsen, and K. Y. Kim, “THz generation by optical Cherenkov emission from ionizing two-color laser pulses,” Phys. Rev. A 88(6), 063804 (2013).
[Crossref]

Babushkin, I.

P. G. D. Martínez, I. Babushkin, L. Bergé, S. Skupin, E. Cabrera-Granado, C. Köhler, U. Morgner, A. Husakou, and J. Herrmann, “Boosting terahertz generation in laser-field ionized gases using a sawtooth wave shape,” Phys. Rev. Lett. 114(18), 183901 (2015).
[Crossref] [PubMed]

L. Bergé, S. Skupin, C. Köhler, I. Babushkin, and J. Herrmann, “3D numerical simulations of THz generation by two-color laser filaments,” Phys. Rev. Lett. 110(7), 073901 (2013).
[Crossref] [PubMed]

I. Babushkin, S. Skupin, A. Husakou, C. Köhler, E. Cabrera-Granado, L. Bergé, and J. Herrmann, “Tailoring terahertz radiation by controlling tunnel photoionization events in gases,” New J. Phys. 13(12), 123029 (2011).
[Crossref]

Bakker, H. J.

Balciunas, T.

Baltuška, A.

Bergé, L.

P. González de Alaiza Martínez, X. Davoine, A. Debayle, L. Gremillet, and L. Bergé, “Terahertz radiation driven by two-color laser pulses at near-relativistic intensities: Competition between photoionization and wakefield effects,” Sci. Rep. 6, 26743 (2016).
[Crossref] [PubMed]

V. A. Andreeva, O. G. Kosareva, N. A. Panov, D. E. Shipilo, P. M. Solyankin, M. N. Esaulkov, P. González de Alaiza Martínez, A. P. Shkurinov, V. A. Makarov, L. Bergé, and S. L. Chin, “Ultrabroad terahertz spectrum generation from an air-based filament plasma,” Phys. Rev. Lett. 116(6), 063902 (2016).
[Crossref] [PubMed]

P. G. D. Martínez, I. Babushkin, L. Bergé, S. Skupin, E. Cabrera-Granado, C. Köhler, U. Morgner, A. Husakou, and J. Herrmann, “Boosting terahertz generation in laser-field ionized gases using a sawtooth wave shape,” Phys. Rev. Lett. 114(18), 183901 (2015).
[Crossref] [PubMed]

A. Debayle, P. G. D. Martínez, L. Gremillet, and L. Bergé, “Nonmonotonic increase in laser-driven THz emissions through multiple ionization events,” Phys. Rev. A 91(4), 041801 (2015).
[Crossref]

A. Debayle, L. Gremillet, L. Bergé, and Ch. Köhler, “Analytical model for THz emissions induced by laser-gas interaction,” Opt. Express 22(11), 13691–13709 (2014).
[Crossref] [PubMed]

L. Bergé, S. Skupin, C. Köhler, I. Babushkin, and J. Herrmann, “3D numerical simulations of THz generation by two-color laser filaments,” Phys. Rev. Lett. 110(7), 073901 (2013).
[Crossref] [PubMed]

I. Babushkin, S. Skupin, A. Husakou, C. Köhler, E. Cabrera-Granado, L. Bergé, and J. Herrmann, “Tailoring terahertz radiation by controlling tunnel photoionization events in gases,” New J. Phys. 13(12), 123029 (2011).
[Crossref]

Bernhardt, J.

J. Bernhardt, W. Liu, S. L. Chin, and R. Sauerbrey, “Pressure independence of intensity clamping during filamentation: theory and experiment,” Appl. Phys. B 91(1), 45–48 (2008).
[Crossref]

Blank, V.

V. Blank, M. D. Thomson, and H. G. Roskos, “Spatio-spectral characteristics of ultra-broadband THz emission from two-colour photoexcited gas plasmas and their impact for nonlinear spectroscopy,” New J. Phys. 15(7), 075023 (2013).
[Crossref]

Borodin, A. V.

Breger, P.

E. Constant, D. Garzella, P. Breger, E. Mevel, C. Dorrer, C. Le Blanc, F. Salin, and P. Agostini, “Optimizing high harmonic generation in absorbing gases: Model and experiment,” Phys. Rev. Lett. 82(8), 1668–1671 (1999).
[Crossref]

Bryan, R. B.

R. B. Bryan, R. B. Holt, and O. Oldenberg, “Recombination and afterglow in nitrogen and oxygen,” Phys. Rev. 106(1), 83–86 (1957).
[Crossref]

Cabrera-Granado, E.

P. G. D. Martínez, I. Babushkin, L. Bergé, S. Skupin, E. Cabrera-Granado, C. Köhler, U. Morgner, A. Husakou, and J. Herrmann, “Boosting terahertz generation in laser-field ionized gases using a sawtooth wave shape,” Phys. Rev. Lett. 114(18), 183901 (2015).
[Crossref] [PubMed]

I. Babushkin, S. Skupin, A. Husakou, C. Köhler, E. Cabrera-Granado, L. Bergé, and J. Herrmann, “Tailoring terahertz radiation by controlling tunnel photoionization events in gases,” New J. Phys. 13(12), 123029 (2011).
[Crossref]

Châteauneuf, M.

T.-J. Wang, S. Yuan, Y. Chen, J.-F. Daigle, C. Marceau, F. Théberge, M. Châteauneuf, J. Dubois, and S. L. Chin, “Toward remote high energy terahertz generation,” Appl. Phys. Lett. 97, 111108 (2010).
[Crossref]

Chen, M.

Chen, Y.

T.-J. Wang, S. Yuan, Y. Chen, J.-F. Daigle, C. Marceau, F. Théberge, M. Châteauneuf, J. Dubois, and S. L. Chin, “Toward remote high energy terahertz generation,” Appl. Phys. Lett. 97, 111108 (2010).
[Crossref]

Chin, S. L.

V. A. Andreeva, O. G. Kosareva, N. A. Panov, D. E. Shipilo, P. M. Solyankin, M. N. Esaulkov, P. González de Alaiza Martínez, A. P. Shkurinov, V. A. Makarov, L. Bergé, and S. L. Chin, “Ultrabroad terahertz spectrum generation from an air-based filament plasma,” Phys. Rev. Lett. 116(6), 063902 (2016).
[Crossref] [PubMed]

A. V. Borodin, N. A. Panov, O. G. Kosareva, V. A. Andreeva, M. N. Esaulkov, V. A. Makarov, A. P. Shkurinov, S. L. Chin, and X.-C. Zhang, “Transformation of terahertz spectra emitted from dual-frequency femtosecond pulse interaction in gases,” Opt. Lett. 38(11), 1906–1908 (2013).
[Crossref] [PubMed]

T.-J. Wang, S. Yuan, Y. Chen, J.-F. Daigle, C. Marceau, F. Théberge, M. Châteauneuf, J. Dubois, and S. L. Chin, “Toward remote high energy terahertz generation,” Appl. Phys. Lett. 97, 111108 (2010).
[Crossref]

J. Bernhardt, W. Liu, S. L. Chin, and R. Sauerbrey, “Pressure independence of intensity clamping during filamentation: theory and experiment,” Appl. Phys. B 91(1), 45–48 (2008).
[Crossref]

Constant, E.

E. Constant, D. Garzella, P. Breger, E. Mevel, C. Dorrer, C. Le Blanc, F. Salin, and P. Agostini, “Optimizing high harmonic generation in absorbing gases: Model and experiment,” Phys. Rev. Lett. 82(8), 1668–1671 (1999).
[Crossref]

Cook, D. J.

Dai, J.

J. Dai, N. Karpowicz, and X.-C. Zhang, “Coherent polarization control of terahertz waves generated from two-color laser-induced gas plasma,” Phys. Rev. Lett. 103(2), 023001 (2009).
[Crossref] [PubMed]

Daigle, J.-F.

T.-J. Wang, S. Yuan, Y. Chen, J.-F. Daigle, C. Marceau, F. Théberge, M. Châteauneuf, J. Dubois, and S. L. Chin, “Toward remote high energy terahertz generation,” Appl. Phys. Lett. 97, 111108 (2010).
[Crossref]

Davoine, X.

P. González de Alaiza Martínez, X. Davoine, A. Debayle, L. Gremillet, and L. Bergé, “Terahertz radiation driven by two-color laser pulses at near-relativistic intensities: Competition between photoionization and wakefield effects,” Sci. Rep. 6, 26743 (2016).
[Crossref] [PubMed]

Debayle, A.

P. González de Alaiza Martínez, X. Davoine, A. Debayle, L. Gremillet, and L. Bergé, “Terahertz radiation driven by two-color laser pulses at near-relativistic intensities: Competition between photoionization and wakefield effects,” Sci. Rep. 6, 26743 (2016).
[Crossref] [PubMed]

A. Debayle, P. G. D. Martínez, L. Gremillet, and L. Bergé, “Nonmonotonic increase in laser-driven THz emissions through multiple ionization events,” Phys. Rev. A 91(4), 041801 (2015).
[Crossref]

A. Debayle, L. Gremillet, L. Bergé, and Ch. Köhler, “Analytical model for THz emissions induced by laser-gas interaction,” Opt. Express 22(11), 13691–13709 (2014).
[Crossref] [PubMed]

Delone, N. B.

M. V. Ammosov, N. B. Delone, and V. P. Krainov, “Tunnel ionization of complex atoms and of atomic ions in an alternating electromagnetic field,” Sov. Phys. JETP 64, 1191–1194 (1986).

Dietze, D.

Dorrer, C.

E. Constant, D. Garzella, P. Breger, E. Mevel, C. Dorrer, C. Le Blanc, F. Salin, and P. Agostini, “Optimizing high harmonic generation in absorbing gases: Model and experiment,” Phys. Rev. Lett. 82(8), 1668–1671 (1999).
[Crossref]

Dubois, J.

T.-J. Wang, S. Yuan, Y. Chen, J.-F. Daigle, C. Marceau, F. Théberge, M. Châteauneuf, J. Dubois, and S. L. Chin, “Toward remote high energy terahertz generation,” Appl. Phys. Lett. 97, 111108 (2010).
[Crossref]

Esaulkov, M. N.

V. A. Andreeva, O. G. Kosareva, N. A. Panov, D. E. Shipilo, P. M. Solyankin, M. N. Esaulkov, P. González de Alaiza Martínez, A. P. Shkurinov, V. A. Makarov, L. Bergé, and S. L. Chin, “Ultrabroad terahertz spectrum generation from an air-based filament plasma,” Phys. Rev. Lett. 116(6), 063902 (2016).
[Crossref] [PubMed]

A. V. Borodin, N. A. Panov, O. G. Kosareva, V. A. Andreeva, M. N. Esaulkov, V. A. Makarov, A. P. Shkurinov, S. L. Chin, and X.-C. Zhang, “Transformation of terahertz spectra emitted from dual-frequency femtosecond pulse interaction in gases,” Opt. Lett. 38(11), 1906–1908 (2013).
[Crossref] [PubMed]

Franco, M.

S. Tzortzakis, B. Prade, M. Franco, and A. Mysyrowicz, “Time-evolution of the plasma channel at the trail of a self-guided IR femtosecond laser pulse in air,” Opt. Commun. 181(1-3), 123–127 (2000).
[Crossref]

Garzella, D.

E. Constant, D. Garzella, P. Breger, E. Mevel, C. Dorrer, C. Le Blanc, F. Salin, and P. Agostini, “Optimizing high harmonic generation in absorbing gases: Model and experiment,” Phys. Rev. Lett. 82(8), 1668–1671 (1999).
[Crossref]

Ge, X.

Gildenburg, V. B.

V. B. Gildenburg and N. V. Vvedenskii, “Optical-to-THz wave conversion via excitation of plasma oscillations in the tunneling-ionization process,” Phys. Rev. Lett. 98(24), 245002 (2007).
[Crossref] [PubMed]

Glownia, J. H.

González de Alaiza Martínez, P.

P. González de Alaiza Martínez, X. Davoine, A. Debayle, L. Gremillet, and L. Bergé, “Terahertz radiation driven by two-color laser pulses at near-relativistic intensities: Competition between photoionization and wakefield effects,” Sci. Rep. 6, 26743 (2016).
[Crossref] [PubMed]

V. A. Andreeva, O. G. Kosareva, N. A. Panov, D. E. Shipilo, P. M. Solyankin, M. N. Esaulkov, P. González de Alaiza Martínez, A. P. Shkurinov, V. A. Makarov, L. Bergé, and S. L. Chin, “Ultrabroad terahertz spectrum generation from an air-based filament plasma,” Phys. Rev. Lett. 116(6), 063902 (2016).
[Crossref] [PubMed]

Gremillet, L.

P. González de Alaiza Martínez, X. Davoine, A. Debayle, L. Gremillet, and L. Bergé, “Terahertz radiation driven by two-color laser pulses at near-relativistic intensities: Competition between photoionization and wakefield effects,” Sci. Rep. 6, 26743 (2016).
[Crossref] [PubMed]

A. Debayle, P. G. D. Martínez, L. Gremillet, and L. Bergé, “Nonmonotonic increase in laser-driven THz emissions through multiple ionization events,” Phys. Rev. A 91(4), 041801 (2015).
[Crossref]

A. Debayle, L. Gremillet, L. Bergé, and Ch. Köhler, “Analytical model for THz emissions induced by laser-gas interaction,” Opt. Express 22(11), 13691–13709 (2014).
[Crossref] [PubMed]

Haessler, S.

Herrmann, J.

P. G. D. Martínez, I. Babushkin, L. Bergé, S. Skupin, E. Cabrera-Granado, C. Köhler, U. Morgner, A. Husakou, and J. Herrmann, “Boosting terahertz generation in laser-field ionized gases using a sawtooth wave shape,” Phys. Rev. Lett. 114(18), 183901 (2015).
[Crossref] [PubMed]

L. Bergé, S. Skupin, C. Köhler, I. Babushkin, and J. Herrmann, “3D numerical simulations of THz generation by two-color laser filaments,” Phys. Rev. Lett. 110(7), 073901 (2013).
[Crossref] [PubMed]

I. Babushkin, S. Skupin, A. Husakou, C. Köhler, E. Cabrera-Granado, L. Bergé, and J. Herrmann, “Tailoring terahertz radiation by controlling tunnel photoionization events in gases,” New J. Phys. 13(12), 123029 (2011).
[Crossref]

Hochstrasser, R. M.

Holt, R. B.

R. B. Bryan, R. B. Holt, and O. Oldenberg, “Recombination and afterglow in nitrogen and oxygen,” Phys. Rev. 106(1), 83–86 (1957).
[Crossref]

Houard, A.

S. I. Mitryukovskiy, Y. Liu, B. Prade, A. Houard, and A. Mysyrowicz, “Coherent synthesis of terahertz radiation from femtosecond laser filaments in air,” Appl. Phys. Lett. 102(22), 221107 (2013).
[Crossref]

Husakou, A.

P. G. D. Martínez, I. Babushkin, L. Bergé, S. Skupin, E. Cabrera-Granado, C. Köhler, U. Morgner, A. Husakou, and J. Herrmann, “Boosting terahertz generation in laser-field ionized gases using a sawtooth wave shape,” Phys. Rev. Lett. 114(18), 183901 (2015).
[Crossref] [PubMed]

I. Babushkin, S. Skupin, A. Husakou, C. Köhler, E. Cabrera-Granado, L. Bergé, and J. Herrmann, “Tailoring terahertz radiation by controlling tunnel photoionization events in gases,” New J. Phys. 13(12), 123029 (2011).
[Crossref]

Ivanov, M.

Jhajj, N.

T. I. Oh, Y. S. You, N. Jhajj, E. W. Rosenthal, H. M. Milchberg, and K. Y. Kim, “Intense terahertz generation in two-color laser filamentation: energy scaling with terawatt laser systems,” New J. Phys. 15(7), 075002 (2013).
[Crossref]

Johnson, L. A.

L. A. Johnson, J. P. Palastro, T. M. Antonsen, and K. Y. Kim, “THz generation by optical Cherenkov emission from ionizing two-color laser pulses,” Phys. Rev. A 88(6), 063804 (2013).
[Crossref]

Karpowicz, N.

J. Dai, N. Karpowicz, and X.-C. Zhang, “Coherent polarization control of terahertz waves generated from two-color laser-induced gas plasma,” Phys. Rev. Lett. 103(2), 023001 (2009).
[Crossref] [PubMed]

N. Karpowicz and X.-C. Zhang, “Coherent terahertz echo of tunnel ionization in gases,” Phys. Rev. Lett. 102(9), 093001 (2009).
[Crossref] [PubMed]

Khanna, B. N.

Kim, K. Y.

T. I. Oh, Y. J. Yoo, Y. S. You, and K. Y. Kim, “Generation of strong terahertz fields exceeding 8 MV/cm at 1 kHz and real-time beam profiling,” Appl. Phys. Lett. 105(4), 041103 (2014).
[Crossref]

T. I. Oh, Y. S. You, N. Jhajj, E. W. Rosenthal, H. M. Milchberg, and K. Y. Kim, “Intense terahertz generation in two-color laser filamentation: energy scaling with terawatt laser systems,” New J. Phys. 15(7), 075002 (2013).
[Crossref]

L. A. Johnson, J. P. Palastro, T. M. Antonsen, and K. Y. Kim, “THz generation by optical Cherenkov emission from ionizing two-color laser pulses,” Phys. Rev. A 88(6), 063804 (2013).
[Crossref]

Y. S. You, T. I. Oh, and K. Y. Kim, “Off-axis phase-matched terahertz emission from two-color laser-induced plasma filaments,” Phys. Rev. Lett. 109(18), 183902 (2012).
[Crossref] [PubMed]

K. Y. Kim, J. H. Glownia, A. J. Taylor, and G. Rodriguez, “Terahertz emission from ultrafast ionizing air in symmetry-broken laser fields,” Opt. Express 15(8), 4577–4584 (2007).
[Crossref] [PubMed]

Köhler, C.

P. G. D. Martínez, I. Babushkin, L. Bergé, S. Skupin, E. Cabrera-Granado, C. Köhler, U. Morgner, A. Husakou, and J. Herrmann, “Boosting terahertz generation in laser-field ionized gases using a sawtooth wave shape,” Phys. Rev. Lett. 114(18), 183901 (2015).
[Crossref] [PubMed]

L. Bergé, S. Skupin, C. Köhler, I. Babushkin, and J. Herrmann, “3D numerical simulations of THz generation by two-color laser filaments,” Phys. Rev. Lett. 110(7), 073901 (2013).
[Crossref] [PubMed]

I. Babushkin, S. Skupin, A. Husakou, C. Köhler, E. Cabrera-Granado, L. Bergé, and J. Herrmann, “Tailoring terahertz radiation by controlling tunnel photoionization events in gases,” New J. Phys. 13(12), 123029 (2011).
[Crossref]

Köhler, Ch.

Korytin, A. I.

N. V. Vvedenskii, A. I. Korytin, V. A. Kostin, A. A. Murzanev, A. A. Silaev, and A. N. Stepanov, “Two-color laser-plasma generation of terahertz radiation using a frequency-tunable half harmonic of a femtosecond pulse,” Phys. Rev. Lett. 112(5), 055004 (2014).
[Crossref] [PubMed]

Kosareva, O. G.

V. A. Andreeva, O. G. Kosareva, N. A. Panov, D. E. Shipilo, P. M. Solyankin, M. N. Esaulkov, P. González de Alaiza Martínez, A. P. Shkurinov, V. A. Makarov, L. Bergé, and S. L. Chin, “Ultrabroad terahertz spectrum generation from an air-based filament plasma,” Phys. Rev. Lett. 116(6), 063902 (2016).
[Crossref] [PubMed]

A. V. Borodin, N. A. Panov, O. G. Kosareva, V. A. Andreeva, M. N. Esaulkov, V. A. Makarov, A. P. Shkurinov, S. L. Chin, and X.-C. Zhang, “Transformation of terahertz spectra emitted from dual-frequency femtosecond pulse interaction in gases,” Opt. Lett. 38(11), 1906–1908 (2013).
[Crossref] [PubMed]

Kostin, V. A.

N. V. Vvedenskii, A. I. Korytin, V. A. Kostin, A. A. Murzanev, A. A. Silaev, and A. N. Stepanov, “Two-color laser-plasma generation of terahertz radiation using a frequency-tunable half harmonic of a femtosecond pulse,” Phys. Rev. Lett. 112(5), 055004 (2014).
[Crossref] [PubMed]

Krainov, V. P.

M. V. Ammosov, N. B. Delone, and V. P. Krainov, “Tunnel ionization of complex atoms and of atomic ions in an alternating electromagnetic field,” Sov. Phys. JETP 64, 1191–1194 (1986).

Le Blanc, C.

E. Constant, D. Garzella, P. Breger, E. Mevel, C. Dorrer, C. Le Blanc, F. Salin, and P. Agostini, “Optimizing high harmonic generation in absorbing gases: Model and experiment,” Phys. Rev. Lett. 82(8), 1668–1671 (1999).
[Crossref]

Li, C.

Li, M.

M. Li, W. Li, Y. Shi, P. Lu, H. Pan, and H. Zeng, “Verification of the physical mechanism of THz generation by dual-color ultrashort laser pulses,” Appl. Phys. Lett. 101(16), 161104 (2012).
[Crossref]

Li, R.

Li, W.

M. Li, W. Li, Y. Shi, P. Lu, H. Pan, and H. Zeng, “Verification of the physical mechanism of THz generation by dual-color ultrashort laser pulses,” Appl. Phys. Lett. 101(16), 161104 (2012).
[Crossref]

Lindenberg, A. M.

H. Wen and A. M. Lindenberg, “Coherent terahertz polarization control through manipulation of electron trajectories,” Phys. Rev. Lett. 103(2), 023902 (2009).
[Crossref] [PubMed]

Liu, C. S.

C. S. Liu and V. K. Tripathi, “Tunable terahertz radiation from a tunnel ionized magnetized plasma cylinder,” J. Appl. Phys. 105(1), 013313 (2009).
[Crossref]

Liu, P.

Liu, W.

J. Bernhardt, W. Liu, S. L. Chin, and R. Sauerbrey, “Pressure independence of intensity clamping during filamentation: theory and experiment,” Appl. Phys. B 91(1), 45–48 (2008).
[Crossref]

Liu, Y.

S. I. Mitryukovskiy, Y. Liu, B. Prade, A. Houard, and A. Mysyrowicz, “Coherent synthesis of terahertz radiation from femtosecond laser filaments in air,” Appl. Phys. Lett. 102(22), 221107 (2013).
[Crossref]

Lorenc, D.

Lu, H.

Lu, P.

M. Li, W. Li, Y. Shi, P. Lu, H. Pan, and H. Zeng, “Verification of the physical mechanism of THz generation by dual-color ultrashort laser pulses,” Appl. Phys. Lett. 101(16), 161104 (2012).
[Crossref]

Lu, X.

X. Lu and X.-C. Zhang, “Generation of elliptically polarized terahertz waves from laser-induced plasma with double helix electrodes,” Phys. Rev. Lett. 108(12), 123903 (2012).
[Crossref] [PubMed]

Makarov, V. A.

V. A. Andreeva, O. G. Kosareva, N. A. Panov, D. E. Shipilo, P. M. Solyankin, M. N. Esaulkov, P. González de Alaiza Martínez, A. P. Shkurinov, V. A. Makarov, L. Bergé, and S. L. Chin, “Ultrabroad terahertz spectrum generation from an air-based filament plasma,” Phys. Rev. Lett. 116(6), 063902 (2016).
[Crossref] [PubMed]

A. V. Borodin, N. A. Panov, O. G. Kosareva, V. A. Andreeva, M. N. Esaulkov, V. A. Makarov, A. P. Shkurinov, S. L. Chin, and X.-C. Zhang, “Transformation of terahertz spectra emitted from dual-frequency femtosecond pulse interaction in gases,” Opt. Lett. 38(11), 1906–1908 (2013).
[Crossref] [PubMed]

Marceau, C.

T.-J. Wang, S. Yuan, Y. Chen, J.-F. Daigle, C. Marceau, F. Théberge, M. Châteauneuf, J. Dubois, and S. L. Chin, “Toward remote high energy terahertz generation,” Appl. Phys. Lett. 97, 111108 (2010).
[Crossref]

Martínez, P. G. D.

P. G. D. Martínez, I. Babushkin, L. Bergé, S. Skupin, E. Cabrera-Granado, C. Köhler, U. Morgner, A. Husakou, and J. Herrmann, “Boosting terahertz generation in laser-field ionized gases using a sawtooth wave shape,” Phys. Rev. Lett. 114(18), 183901 (2015).
[Crossref] [PubMed]

A. Debayle, P. G. D. Martínez, L. Gremillet, and L. Bergé, “Nonmonotonic increase in laser-driven THz emissions through multiple ionization events,” Phys. Rev. A 91(4), 041801 (2015).
[Crossref]

Mevel, E.

E. Constant, D. Garzella, P. Breger, E. Mevel, C. Dorrer, C. Le Blanc, F. Salin, and P. Agostini, “Optimizing high harmonic generation in absorbing gases: Model and experiment,” Phys. Rev. Lett. 82(8), 1668–1671 (1999).
[Crossref]

Milchberg, H. M.

T. I. Oh, Y. S. You, N. Jhajj, E. W. Rosenthal, H. M. Milchberg, and K. Y. Kim, “Intense terahertz generation in two-color laser filamentation: energy scaling with terawatt laser systems,” New J. Phys. 15(7), 075002 (2013).
[Crossref]

Mima, K.

W.-M. Wang, Z.-M. Sheng, H.-C. Wu, M. Chen, C. Li, J. Zhang, and K. Mima, “Strong terahertz pulse generation by chirped laser pulses in tenuous gases,” Opt. Express 16(21), 16999–17006 (2008).
[Crossref] [PubMed]

Z.-M. Sheng, K. Mima, J. Zhang, and H. Sanuki, “Emission of electromagnetic pulses from laser wakefields through linear mode conversion,” Phys. Rev. Lett. 94(9), 095003 (2005).
[Crossref] [PubMed]

Mitryukovskiy, S. I.

S. I. Mitryukovskiy, Y. Liu, B. Prade, A. Houard, and A. Mysyrowicz, “Coherent synthesis of terahertz radiation from femtosecond laser filaments in air,” Appl. Phys. Lett. 102(22), 221107 (2013).
[Crossref]

Morgner, U.

P. G. D. Martínez, I. Babushkin, L. Bergé, S. Skupin, E. Cabrera-Granado, C. Köhler, U. Morgner, A. Husakou, and J. Herrmann, “Boosting terahertz generation in laser-field ionized gases using a sawtooth wave shape,” Phys. Rev. Lett. 114(18), 183901 (2015).
[Crossref] [PubMed]

Murzanev, A. A.

N. V. Vvedenskii, A. I. Korytin, V. A. Kostin, A. A. Murzanev, A. A. Silaev, and A. N. Stepanov, “Two-color laser-plasma generation of terahertz radiation using a frequency-tunable half harmonic of a femtosecond pulse,” Phys. Rev. Lett. 112(5), 055004 (2014).
[Crossref] [PubMed]

Mysyrowicz, A.

S. I. Mitryukovskiy, Y. Liu, B. Prade, A. Houard, and A. Mysyrowicz, “Coherent synthesis of terahertz radiation from femtosecond laser filaments in air,” Appl. Phys. Lett. 102(22), 221107 (2013).
[Crossref]

S. Tzortzakis, B. Prade, M. Franco, and A. Mysyrowicz, “Time-evolution of the plasma channel at the trail of a self-guided IR femtosecond laser pulse in air,” Opt. Commun. 181(1-3), 123–127 (2000).
[Crossref]

Nienhuys, H. K.

Oh, T. I.

T. I. Oh, Y. J. Yoo, Y. S. You, and K. Y. Kim, “Generation of strong terahertz fields exceeding 8 MV/cm at 1 kHz and real-time beam profiling,” Appl. Phys. Lett. 105(4), 041103 (2014).
[Crossref]

T. I. Oh, Y. S. You, N. Jhajj, E. W. Rosenthal, H. M. Milchberg, and K. Y. Kim, “Intense terahertz generation in two-color laser filamentation: energy scaling with terawatt laser systems,” New J. Phys. 15(7), 075002 (2013).
[Crossref]

Y. S. You, T. I. Oh, and K. Y. Kim, “Off-axis phase-matched terahertz emission from two-color laser-induced plasma filaments,” Phys. Rev. Lett. 109(18), 183902 (2012).
[Crossref] [PubMed]

Oldenberg, O.

R. B. Bryan, R. B. Holt, and O. Oldenberg, “Recombination and afterglow in nitrogen and oxygen,” Phys. Rev. 106(1), 83–86 (1957).
[Crossref]

Palastro, J. P.

L. A. Johnson, J. P. Palastro, T. M. Antonsen, and K. Y. Kim, “THz generation by optical Cherenkov emission from ionizing two-color laser pulses,” Phys. Rev. A 88(6), 063804 (2013).
[Crossref]

Pan, H.

M. Li, W. Li, Y. Shi, P. Lu, H. Pan, and H. Zeng, “Verification of the physical mechanism of THz generation by dual-color ultrashort laser pulses,” Appl. Phys. Lett. 101(16), 161104 (2012).
[Crossref]

Panov, N. A.

V. A. Andreeva, O. G. Kosareva, N. A. Panov, D. E. Shipilo, P. M. Solyankin, M. N. Esaulkov, P. González de Alaiza Martínez, A. P. Shkurinov, V. A. Makarov, L. Bergé, and S. L. Chin, “Ultrabroad terahertz spectrum generation from an air-based filament plasma,” Phys. Rev. Lett. 116(6), 063902 (2016).
[Crossref] [PubMed]

A. V. Borodin, N. A. Panov, O. G. Kosareva, V. A. Andreeva, M. N. Esaulkov, V. A. Makarov, A. P. Shkurinov, S. L. Chin, and X.-C. Zhang, “Transformation of terahertz spectra emitted from dual-frequency femtosecond pulse interaction in gases,” Opt. Lett. 38(11), 1906–1908 (2013).
[Crossref] [PubMed]

Paulus, G. G.

Peck, E. R.

Planken, P. C. M.

Prade, B.

S. I. Mitryukovskiy, Y. Liu, B. Prade, A. Houard, and A. Mysyrowicz, “Coherent synthesis of terahertz radiation from femtosecond laser filaments in air,” Appl. Phys. Lett. 102(22), 221107 (2013).
[Crossref]

S. Tzortzakis, B. Prade, M. Franco, and A. Mysyrowicz, “Time-evolution of the plasma channel at the trail of a self-guided IR femtosecond laser pulse in air,” Opt. Commun. 181(1-3), 123–127 (2000).
[Crossref]

Rathje, T.

Reimann, K.

K. Reimann, “Terahertz radiation: A table-top source of strong pulses,” Nat. Photonics 2(10), 596–597 (2008).
[Crossref]

Rodriguez, G.

Rosenthal, E. W.

T. I. Oh, Y. S. You, N. Jhajj, E. W. Rosenthal, H. M. Milchberg, and K. Y. Kim, “Intense terahertz generation in two-color laser filamentation: energy scaling with terawatt laser systems,” New J. Phys. 15(7), 075002 (2013).
[Crossref]

Roskos, H. G.

V. Blank, M. D. Thomson, and H. G. Roskos, “Spatio-spectral characteristics of ultra-broadband THz emission from two-colour photoexcited gas plasmas and their impact for nonlinear spectroscopy,” New J. Phys. 15(7), 075023 (2013).
[Crossref]

Salin, F.

E. Constant, D. Garzella, P. Breger, E. Mevel, C. Dorrer, C. Le Blanc, F. Salin, and P. Agostini, “Optimizing high harmonic generation in absorbing gases: Model and experiment,” Phys. Rev. Lett. 82(8), 1668–1671 (1999).
[Crossref]

Sanuki, H.

Z.-M. Sheng, K. Mima, J. Zhang, and H. Sanuki, “Emission of electromagnetic pulses from laser wakefields through linear mode conversion,” Phys. Rev. Lett. 94(9), 095003 (2005).
[Crossref] [PubMed]

Sauerbrey, R.

J. Bernhardt, W. Liu, S. L. Chin, and R. Sauerbrey, “Pressure independence of intensity clamping during filamentation: theory and experiment,” Appl. Phys. B 91(1), 45–48 (2008).
[Crossref]

Sheng, Z.-M.

W.-M. Wang, Z.-M. Sheng, H.-C. Wu, M. Chen, C. Li, J. Zhang, and K. Mima, “Strong terahertz pulse generation by chirped laser pulses in tenuous gases,” Opt. Express 16(21), 16999–17006 (2008).
[Crossref] [PubMed]

Z.-M. Sheng, K. Mima, J. Zhang, and H. Sanuki, “Emission of electromagnetic pulses from laser wakefields through linear mode conversion,” Phys. Rev. Lett. 94(9), 095003 (2005).
[Crossref] [PubMed]

Shi, Y.

M. Li, W. Li, Y. Shi, P. Lu, H. Pan, and H. Zeng, “Verification of the physical mechanism of THz generation by dual-color ultrashort laser pulses,” Appl. Phys. Lett. 101(16), 161104 (2012).
[Crossref]

Shipilo, D. E.

V. A. Andreeva, O. G. Kosareva, N. A. Panov, D. E. Shipilo, P. M. Solyankin, M. N. Esaulkov, P. González de Alaiza Martínez, A. P. Shkurinov, V. A. Makarov, L. Bergé, and S. L. Chin, “Ultrabroad terahertz spectrum generation from an air-based filament plasma,” Phys. Rev. Lett. 116(6), 063902 (2016).
[Crossref] [PubMed]

Shkurinov, A. P.

V. A. Andreeva, O. G. Kosareva, N. A. Panov, D. E. Shipilo, P. M. Solyankin, M. N. Esaulkov, P. González de Alaiza Martínez, A. P. Shkurinov, V. A. Makarov, L. Bergé, and S. L. Chin, “Ultrabroad terahertz spectrum generation from an air-based filament plasma,” Phys. Rev. Lett. 116(6), 063902 (2016).
[Crossref] [PubMed]

A. V. Borodin, N. A. Panov, O. G. Kosareva, V. A. Andreeva, M. N. Esaulkov, V. A. Makarov, A. P. Shkurinov, S. L. Chin, and X.-C. Zhang, “Transformation of terahertz spectra emitted from dual-frequency femtosecond pulse interaction in gases,” Opt. Lett. 38(11), 1906–1908 (2013).
[Crossref] [PubMed]

Silaev, A. A.

N. V. Vvedenskii, A. I. Korytin, V. A. Kostin, A. A. Murzanev, A. A. Silaev, and A. N. Stepanov, “Two-color laser-plasma generation of terahertz radiation using a frequency-tunable half harmonic of a femtosecond pulse,” Phys. Rev. Lett. 112(5), 055004 (2014).
[Crossref] [PubMed]

Skupin, S.

P. G. D. Martínez, I. Babushkin, L. Bergé, S. Skupin, E. Cabrera-Granado, C. Köhler, U. Morgner, A. Husakou, and J. Herrmann, “Boosting terahertz generation in laser-field ionized gases using a sawtooth wave shape,” Phys. Rev. Lett. 114(18), 183901 (2015).
[Crossref] [PubMed]

L. Bergé, S. Skupin, C. Köhler, I. Babushkin, and J. Herrmann, “3D numerical simulations of THz generation by two-color laser filaments,” Phys. Rev. Lett. 110(7), 073901 (2013).
[Crossref] [PubMed]

I. Babushkin, S. Skupin, A. Husakou, C. Köhler, E. Cabrera-Granado, L. Bergé, and J. Herrmann, “Tailoring terahertz radiation by controlling tunnel photoionization events in gases,” New J. Phys. 13(12), 123029 (2011).
[Crossref]

Smirnova, O.

Solyankin, P. M.

V. A. Andreeva, O. G. Kosareva, N. A. Panov, D. E. Shipilo, P. M. Solyankin, M. N. Esaulkov, P. González de Alaiza Martínez, A. P. Shkurinov, V. A. Makarov, L. Bergé, and S. L. Chin, “Ultrabroad terahertz spectrum generation from an air-based filament plasma,” Phys. Rev. Lett. 116(6), 063902 (2016).
[Crossref] [PubMed]

Stepanov, A. N.

N. V. Vvedenskii, A. I. Korytin, V. A. Kostin, A. A. Murzanev, A. A. Silaev, and A. N. Stepanov, “Two-color laser-plasma generation of terahertz radiation using a frequency-tunable half harmonic of a femtosecond pulse,” Phys. Rev. Lett. 112(5), 055004 (2014).
[Crossref] [PubMed]

Taylor, A. J.

Théberge, F.

T.-J. Wang, S. Yuan, Y. Chen, J.-F. Daigle, C. Marceau, F. Théberge, M. Châteauneuf, J. Dubois, and S. L. Chin, “Toward remote high energy terahertz generation,” Appl. Phys. Lett. 97, 111108 (2010).
[Crossref]

Thomson, M. D.

V. Blank, M. D. Thomson, and H. G. Roskos, “Spatio-spectral characteristics of ultra-broadband THz emission from two-colour photoexcited gas plasmas and their impact for nonlinear spectroscopy,” New J. Phys. 15(7), 075023 (2013).
[Crossref]

Tripathi, V. K.

C. S. Liu and V. K. Tripathi, “Tunable terahertz radiation from a tunnel ionized magnetized plasma cylinder,” J. Appl. Phys. 105(1), 013313 (2009).
[Crossref]

Tzortzakis, S.

S. Tzortzakis, B. Prade, M. Franco, and A. Mysyrowicz, “Time-evolution of the plasma channel at the trail of a self-guided IR femtosecond laser pulse in air,” Opt. Commun. 181(1-3), 123–127 (2000).
[Crossref]

Unterrainer, K.

Vvedenskii, N. V.

N. V. Vvedenskii, A. I. Korytin, V. A. Kostin, A. A. Murzanev, A. A. Silaev, and A. N. Stepanov, “Two-color laser-plasma generation of terahertz radiation using a frequency-tunable half harmonic of a femtosecond pulse,” Phys. Rev. Lett. 112(5), 055004 (2014).
[Crossref] [PubMed]

V. B. Gildenburg and N. V. Vvedenskii, “Optical-to-THz wave conversion via excitation of plasma oscillations in the tunneling-ionization process,” Phys. Rev. Lett. 98(24), 245002 (2007).
[Crossref] [PubMed]

Wang, T.-J.

T.-J. Wang, S. Yuan, Y. Chen, J.-F. Daigle, C. Marceau, F. Théberge, M. Châteauneuf, J. Dubois, and S. L. Chin, “Toward remote high energy terahertz generation,” Appl. Phys. Lett. 97, 111108 (2010).
[Crossref]

Wang, W.-M.

Wen, H.

H. Wen and A. M. Lindenberg, “Coherent terahertz polarization control through manipulation of electron trajectories,” Phys. Rev. Lett. 103(2), 023902 (2009).
[Crossref] [PubMed]

Wenckebach, T.

Wu, H.-C.

Xu, Z.

Yang, H.

Yoo, Y. J.

T. I. Oh, Y. J. Yoo, Y. S. You, and K. Y. Kim, “Generation of strong terahertz fields exceeding 8 MV/cm at 1 kHz and real-time beam profiling,” Appl. Phys. Lett. 105(4), 041103 (2014).
[Crossref]

You, Y. S.

T. I. Oh, Y. J. Yoo, Y. S. You, and K. Y. Kim, “Generation of strong terahertz fields exceeding 8 MV/cm at 1 kHz and real-time beam profiling,” Appl. Phys. Lett. 105(4), 041103 (2014).
[Crossref]

T. I. Oh, Y. S. You, N. Jhajj, E. W. Rosenthal, H. M. Milchberg, and K. Y. Kim, “Intense terahertz generation in two-color laser filamentation: energy scaling with terawatt laser systems,” New J. Phys. 15(7), 075002 (2013).
[Crossref]

Y. S. You, T. I. Oh, and K. Y. Kim, “Off-axis phase-matched terahertz emission from two-color laser-induced plasma filaments,” Phys. Rev. Lett. 109(18), 183902 (2012).
[Crossref] [PubMed]

Yuan, S.

T.-J. Wang, S. Yuan, Y. Chen, J.-F. Daigle, C. Marceau, F. Théberge, M. Châteauneuf, J. Dubois, and S. L. Chin, “Toward remote high energy terahertz generation,” Appl. Phys. Lett. 97, 111108 (2010).
[Crossref]

Zeng, H.

M. Li, W. Li, Y. Shi, P. Lu, H. Pan, and H. Zeng, “Verification of the physical mechanism of THz generation by dual-color ultrashort laser pulses,” Appl. Phys. Lett. 101(16), 161104 (2012).
[Crossref]

Zhang, J.

W.-M. Wang, Z.-M. Sheng, H.-C. Wu, M. Chen, C. Li, J. Zhang, and K. Mima, “Strong terahertz pulse generation by chirped laser pulses in tenuous gases,” Opt. Express 16(21), 16999–17006 (2008).
[Crossref] [PubMed]

Z.-M. Sheng, K. Mima, J. Zhang, and H. Sanuki, “Emission of electromagnetic pulses from laser wakefields through linear mode conversion,” Phys. Rev. Lett. 94(9), 095003 (2005).
[Crossref] [PubMed]

Zhang, X.-C.

A. V. Borodin, N. A. Panov, O. G. Kosareva, V. A. Andreeva, M. N. Esaulkov, V. A. Makarov, A. P. Shkurinov, S. L. Chin, and X.-C. Zhang, “Transformation of terahertz spectra emitted from dual-frequency femtosecond pulse interaction in gases,” Opt. Lett. 38(11), 1906–1908 (2013).
[Crossref] [PubMed]

X. Lu and X.-C. Zhang, “Generation of elliptically polarized terahertz waves from laser-induced plasma with double helix electrodes,” Phys. Rev. Lett. 108(12), 123903 (2012).
[Crossref] [PubMed]

N. Karpowicz and X.-C. Zhang, “Coherent terahertz echo of tunnel ionization in gases,” Phys. Rev. Lett. 102(9), 093001 (2009).
[Crossref] [PubMed]

J. Dai, N. Karpowicz, and X.-C. Zhang, “Coherent polarization control of terahertz waves generated from two-color laser-induced gas plasma,” Phys. Rev. Lett. 103(2), 023001 (2009).
[Crossref] [PubMed]

Zheltikov, A. M.

Appl. Phys. B (1)

J. Bernhardt, W. Liu, S. L. Chin, and R. Sauerbrey, “Pressure independence of intensity clamping during filamentation: theory and experiment,” Appl. Phys. B 91(1), 45–48 (2008).
[Crossref]

Appl. Phys. Lett. (4)

S. I. Mitryukovskiy, Y. Liu, B. Prade, A. Houard, and A. Mysyrowicz, “Coherent synthesis of terahertz radiation from femtosecond laser filaments in air,” Appl. Phys. Lett. 102(22), 221107 (2013).
[Crossref]

T. I. Oh, Y. J. Yoo, Y. S. You, and K. Y. Kim, “Generation of strong terahertz fields exceeding 8 MV/cm at 1 kHz and real-time beam profiling,” Appl. Phys. Lett. 105(4), 041103 (2014).
[Crossref]

M. Li, W. Li, Y. Shi, P. Lu, H. Pan, and H. Zeng, “Verification of the physical mechanism of THz generation by dual-color ultrashort laser pulses,” Appl. Phys. Lett. 101(16), 161104 (2012).
[Crossref]

T.-J. Wang, S. Yuan, Y. Chen, J.-F. Daigle, C. Marceau, F. Théberge, M. Châteauneuf, J. Dubois, and S. L. Chin, “Toward remote high energy terahertz generation,” Appl. Phys. Lett. 97, 111108 (2010).
[Crossref]

J. Appl. Phys. (1)

C. S. Liu and V. K. Tripathi, “Tunable terahertz radiation from a tunnel ionized magnetized plasma cylinder,” J. Appl. Phys. 105(1), 013313 (2009).
[Crossref]

J. Opt. Soc. Am. (1)

J. Opt. Soc. Am. B (1)

Nat. Photonics (1)

K. Reimann, “Terahertz radiation: A table-top source of strong pulses,” Nat. Photonics 2(10), 596–597 (2008).
[Crossref]

New J. Phys. (3)

T. I. Oh, Y. S. You, N. Jhajj, E. W. Rosenthal, H. M. Milchberg, and K. Y. Kim, “Intense terahertz generation in two-color laser filamentation: energy scaling with terawatt laser systems,” New J. Phys. 15(7), 075002 (2013).
[Crossref]

I. Babushkin, S. Skupin, A. Husakou, C. Köhler, E. Cabrera-Granado, L. Bergé, and J. Herrmann, “Tailoring terahertz radiation by controlling tunnel photoionization events in gases,” New J. Phys. 13(12), 123029 (2011).
[Crossref]

V. Blank, M. D. Thomson, and H. G. Roskos, “Spatio-spectral characteristics of ultra-broadband THz emission from two-colour photoexcited gas plasmas and their impact for nonlinear spectroscopy,” New J. Phys. 15(7), 075023 (2013).
[Crossref]

Opt. Commun. (1)

S. Tzortzakis, B. Prade, M. Franco, and A. Mysyrowicz, “Time-evolution of the plasma channel at the trail of a self-guided IR femtosecond laser pulse in air,” Opt. Commun. 181(1-3), 123–127 (2000).
[Crossref]

Opt. Express (5)

Opt. Lett. (2)

Phys. Rev. (1)

R. B. Bryan, R. B. Holt, and O. Oldenberg, “Recombination and afterglow in nitrogen and oxygen,” Phys. Rev. 106(1), 83–86 (1957).
[Crossref]

Phys. Rev. A (2)

A. Debayle, P. G. D. Martínez, L. Gremillet, and L. Bergé, “Nonmonotonic increase in laser-driven THz emissions through multiple ionization events,” Phys. Rev. A 91(4), 041801 (2015).
[Crossref]

L. A. Johnson, J. P. Palastro, T. M. Antonsen, and K. Y. Kim, “THz generation by optical Cherenkov emission from ionizing two-color laser pulses,” Phys. Rev. A 88(6), 063804 (2013).
[Crossref]

Phys. Rev. Lett. (12)

J. Dai, N. Karpowicz, and X.-C. Zhang, “Coherent polarization control of terahertz waves generated from two-color laser-induced gas plasma,” Phys. Rev. Lett. 103(2), 023001 (2009).
[Crossref] [PubMed]

N. V. Vvedenskii, A. I. Korytin, V. A. Kostin, A. A. Murzanev, A. A. Silaev, and A. N. Stepanov, “Two-color laser-plasma generation of terahertz radiation using a frequency-tunable half harmonic of a femtosecond pulse,” Phys. Rev. Lett. 112(5), 055004 (2014).
[Crossref] [PubMed]

E. Constant, D. Garzella, P. Breger, E. Mevel, C. Dorrer, C. Le Blanc, F. Salin, and P. Agostini, “Optimizing high harmonic generation in absorbing gases: Model and experiment,” Phys. Rev. Lett. 82(8), 1668–1671 (1999).
[Crossref]

P. G. D. Martínez, I. Babushkin, L. Bergé, S. Skupin, E. Cabrera-Granado, C. Köhler, U. Morgner, A. Husakou, and J. Herrmann, “Boosting terahertz generation in laser-field ionized gases using a sawtooth wave shape,” Phys. Rev. Lett. 114(18), 183901 (2015).
[Crossref] [PubMed]

V. A. Andreeva, O. G. Kosareva, N. A. Panov, D. E. Shipilo, P. M. Solyankin, M. N. Esaulkov, P. González de Alaiza Martínez, A. P. Shkurinov, V. A. Makarov, L. Bergé, and S. L. Chin, “Ultrabroad terahertz spectrum generation from an air-based filament plasma,” Phys. Rev. Lett. 116(6), 063902 (2016).
[Crossref] [PubMed]

N. Karpowicz and X.-C. Zhang, “Coherent terahertz echo of tunnel ionization in gases,” Phys. Rev. Lett. 102(9), 093001 (2009).
[Crossref] [PubMed]

V. B. Gildenburg and N. V. Vvedenskii, “Optical-to-THz wave conversion via excitation of plasma oscillations in the tunneling-ionization process,” Phys. Rev. Lett. 98(24), 245002 (2007).
[Crossref] [PubMed]

Z.-M. Sheng, K. Mima, J. Zhang, and H. Sanuki, “Emission of electromagnetic pulses from laser wakefields through linear mode conversion,” Phys. Rev. Lett. 94(9), 095003 (2005).
[Crossref] [PubMed]

H. Wen and A. M. Lindenberg, “Coherent terahertz polarization control through manipulation of electron trajectories,” Phys. Rev. Lett. 103(2), 023902 (2009).
[Crossref] [PubMed]

X. Lu and X.-C. Zhang, “Generation of elliptically polarized terahertz waves from laser-induced plasma with double helix electrodes,” Phys. Rev. Lett. 108(12), 123903 (2012).
[Crossref] [PubMed]

L. Bergé, S. Skupin, C. Köhler, I. Babushkin, and J. Herrmann, “3D numerical simulations of THz generation by two-color laser filaments,” Phys. Rev. Lett. 110(7), 073901 (2013).
[Crossref] [PubMed]

Y. S. You, T. I. Oh, and K. Y. Kim, “Off-axis phase-matched terahertz emission from two-color laser-induced plasma filaments,” Phys. Rev. Lett. 109(18), 183902 (2012).
[Crossref] [PubMed]

Sci. Rep. (1)

P. González de Alaiza Martínez, X. Davoine, A. Debayle, L. Gremillet, and L. Bergé, “Terahertz radiation driven by two-color laser pulses at near-relativistic intensities: Competition between photoionization and wakefield effects,” Sci. Rep. 6, 26743 (2016).
[Crossref] [PubMed]

Sov. Phys. JETP (1)

M. V. Ammosov, N. B. Delone, and V. P. Krainov, “Tunnel ionization of complex atoms and of atomic ions in an alternating electromagnetic field,” Sov. Phys. JETP 64, 1191–1194 (1986).

Other (3)

J. D. Jackson, Classical Electrodynamics (Berkeley, 1998), Chap. 7.

R. P. Feynman, R. B. Leighton, and M. Sands, Feynman Lectures on Physics (Addison–Wesley, 1964), Vol. 2, Chap. 32.

G. Scoles, Atomic and Molecular Beam Methods, Vol. 1 (Oxford University Press, 1988).

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Figures (5)

Fig. 1
Fig. 1 Schematic diagram of the experimental setup.
Fig. 2
Fig. 2 (a) Normalized THz waveforms as a function of stagnation pressure of molecular jet (100 μm ZnTe crystal), and the time-frequency analysis of THz waves at 0.2 bar (b) and 0.7 bar (c).
Fig. 3
Fig. 3 (a) Calculated refractive index for 800 nm (black line) and THz waves (1 THz, purple line) at varied stagnation pressures; (b) the center positions (red solid circles) of the temporal envelope of THz waves and simulated temporal advance (blue solid line) of the THz pulses (~1 THz); (c) the THz frequencies (red solid circles) and the calculated 0.7 fp (blue solid line). Note that for the pressure less than 0.7 bar (green dotted line), Lskin > 0.3Lm, the THz frequencies is sensitive to the plasma environment.
Fig. 4
Fig. 4 (a) Normalized THz spectrum as a function of stagnation pressure; (b) simulated THz spectrum.
Fig. 5
Fig. 5 (a) Measured terahertz electric field waveform for two-color pulse (red line) and one-color pulse (blue line), respectively. (b) Simulated unfiltered local δE(t) for two-color pulse (red line) and one-color pulse (red line). (c) δE(t) is enlarged in time scale of −0.02 ps~0.04 ps of (b).

Equations (7)

Equations on this page are rendered with MathJax. Learn more.

n(ω,p)=1+δn=1+δ n gas ( ω,p )+δ n plasma ( ω,p ),
n e t =w[ E L (t)][ n 0 n e (t)],
J(t) t = e 2 m e n e (t) E L (t)vJ,
δE exp(vt/2) ω cf 2 v 2 4 sin( ω cf 2 v 2 4 t )G,
n eft (t)= n ef /(1+β n ef t),
F(ω,z)exp(( L m z)/ L skin (ω)),
E THz (ω) 0 L m π w 2 (z)F(ω,z)δ E ^ (z,ω)exp(iθ(z))dz,

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