Abstract

We demonstrate the first megahertz (MHz) repetition-rate, broadband terahertz (THz) source based on optical rectification in the organic crystal HMQ-TMS driven by a femtosecond Yb:fibre laser. Pumping at 1035 nm with 30 fs pulses, we achieve few-cycle THz emission with a smooth multi-octave spectrum that extends up to 6 THz at -30 dB, with conversion efficiencies reaching 10−4 and an average output power of up to 0.38 mW. We assess the thermal damage limit of the crystal and conclude a maximum fluence of ∼1.8 mJ·cm−2 at 10 MHz with a 1/e2 pump beam diameter of 0.10 mm. We compare the performance of HMQ-TMS with the prototypical inorganic crystal gallium phosphide (GaP), yielding a tenfold electric field increase with a peak on-axis field strength of 7 kV·cm−1 and almost double the THz bandwidth. Our results further demonstrate the suitability of organic crystals in combination with fibre lasers for repetition-rate scaling of broadband, high-power THz sources for time-domain spectroscopic applications.

© 2020 Optical Society of America under the terms of the OSA Open Access Publishing Agreement

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References

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  28. Y. Li, F. Liu, Y. Li, L. Chai, Q. Xing, M. Hu, and C. Wang, “Experimental study on GaP surface damage threshold induced by a high repetition rate femtosecond laser,” Appl. Opt. 50(13), 1958–1962 (2011).
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2020 (1)

J. A. Fueloep, S. Tzortzakis, and T. Kampfrath, “Laser-Driven Strong-Field Terahertz Sources,” Adv. Opt. Mater. 8(3), 1900681 (2020).
[Crossref]

2019 (4)

F. Meyer, N. Hekmat, T. Vogel, A. Omar, S. Mansourzadeh, F. Fobbe, M. Hoffmann, Y. Wang, and C. J. Saraceno, “Milliwatt-Class MHz Repetition-Rate THz Source Driven by a sub-100 fs High Power Thin-Disk Laser,” Int. Conf. IRMMW-THz 21, 1–3 (2019).
[Crossref]

M. Jazbinsek, U. Puc, A. Abina, and A. Zidansek, “Organic Crystals for THz Photonics,” Appl. Sci. 9(5), 882 (2019).
[Crossref]

A. T. Tarekegne, B. Zhou, K. Kaltenecker, K. Iwaszczuk, S. Clark, and P. U. Jepsen, “Terahertz time-domain spectroscopy of zone-folded acoustic phonons in 4H and 6H silicon carbide,” Opt. Express 27(3), 3618 (2019).
[Crossref]

K. J. Kaltenecker, E. J. Kelleher, B. Zhou, and P. U. Jepsen, “Attenuation of THz Beams: A "How to" Tutorial,” J. Infrared, Millimeter, Terahertz Waves 40(8), 878–904 (2019).
[Crossref]

2018 (4)

2016 (1)

T. Seifert, S. Jaiswal, U. Martens, J. Hannegan, L. Braun, P. Maldonado, F. Freimuth, A. Kronenberg, J. Henrizi, I. Radu, E. Beaurepaire, Y. Mokrousov, P. M. Oppeneer, M. Jourdan, G. Jakob, D. Turchinovich, L. M. Hayden, M. Wolf, M. Münzenberg, M. Kläui, and T. Kampfrath, “Efficient metallic spintronic emitters of ultrabroadband terahertz radiation,” Nat. Photonics 10(7), 483–488 (2016).
[Crossref]

2015 (2)

J. Lu, H. Y. Hwang, X. Li, S.-H. Lee, O.-P. Kwon, and K. A. Nelson, “Tunable multi-cycle THz generation in organic crystal HMQ-TMS,” Opt. Express 23(17), 22723–22729 (2015).
[Crossref]

C. Vicario, B. Monoszlai, M. Jazbinsek, S. H. Lee, O. P. Kwon, and C. P. Hauri, “Intense, carrier frequency and bandwidth tunable quasi single-cycle pulses from an organic emitter covering the Terahertz frequency gap,” Sci. Rep. 5(1), 14394 (2015).
[Crossref]

2014 (1)

2013 (2)

J. H. Jeong, B. J. Kang, J. S. Kim, M. Jazbinsek, S. H. Lee, S. C. Lee, I. H. Baek, H. Yun, J. Kim, Y. S. Lee, J. H. Lee, J. H. Kim, F. Rotermund, and O. P. Kwon, “High-power broadband organic THz generator,” Sci. Rep. 3(1), 3200 (2013).
[Crossref]

J. Li, L. Chai, J. Shi, F. Liu, B. Liu, B. Xu, M. Hu, Y. Li, Q. Xing, C. Wang, A. B. Fedotov, and A. M. Zheltikov, “Generation of 0.3 mW high-power broadband terahertz pulses from GaP crystal pumped by negatively chirped femtosecond laser pulses,” Laser Phys. Lett. 10(12), 125404 (2013).
[Crossref]

2012 (1)

I. D. Vugmeyster, J. F. Whitaker, and R. Merlin, “GaP based terahertz time-domain spectrometer optimized for the 5-8 THz range,” Appl. Phys. Lett. 101(18), 181101 (2012).
[Crossref]

2011 (1)

2008 (2)

M. C. Hoffmann, K. L. Yeh, H. Y. Hwang, T. S. Sosnowski, B. S. Prall, J. Hebling, and K. A. Nelson, “Fiber laser pumped high average power single-cycle terahertz pulse source,” Appl. Phys. Lett. 93(14), 141107 (2008).
[Crossref]

S. Casalbuoni, H. Schlarb, B. Schmidt, P. Schmueser, B. Steffen, and A. Winter, “Numerical studies on the electro-optic detection of femtosecond electron bunches,” Phys. Rev. Spec. Top.--Accel. Beams 11(7), 072802 (2008).
[Crossref]

2007 (1)

M. J. Fitch, M. R. Leahy-Hoppa, E. W. Ott, and R. Osiander, “Molecular absorption cross-section and absolute absorptivity in the THz frequency range for the explosives TNT, RDX, HMX, and PETN,” Chem. Phys. Lett. 443(4-6), 284–288 (2007).
[Crossref]

2006 (2)

2004 (1)

2001 (1)

P. Y. Han, M. Tani, M. Usami, S. Kono, R. Kersting, and X. C. Zhang, “A direct comparison between terahertz time-domain spectroscopy and far-infrared Fourier transform spectroscopy,” J. Appl. Phys. 89(4), 2357–2359 (2001).
[Crossref]

1968 (1)

D. F. Nelson and E. H. Turner, “Electro-optic and piezoelectric coefficients and refractive index of gallium phosphide,” J. Appl. Phys. 39(7), 3337–3343 (1968).
[Crossref]

Abina, A.

M. Jazbinsek, U. Puc, A. Abina, and A. Zidansek, “Organic Crystals for THz Photonics,” Appl. Sci. 9(5), 882 (2019).
[Crossref]

Agrawal, G. P.

G. P. Agrawal, Applications of Nonlinear Fiber Optics (Academic Press, 2008).

Baek, I. H.

J. H. Jeong, B. J. Kang, J. S. Kim, M. Jazbinsek, S. H. Lee, S. C. Lee, I. H. Baek, H. Yun, J. Kim, Y. S. Lee, J. H. Lee, J. H. Kim, F. Rotermund, and O. P. Kwon, “High-power broadband organic THz generator,” Sci. Rep. 3(1), 3200 (2013).
[Crossref]

Beaurepaire, E.

T. Seifert, S. Jaiswal, U. Martens, J. Hannegan, L. Braun, P. Maldonado, F. Freimuth, A. Kronenberg, J. Henrizi, I. Radu, E. Beaurepaire, Y. Mokrousov, P. M. Oppeneer, M. Jourdan, G. Jakob, D. Turchinovich, L. M. Hayden, M. Wolf, M. Münzenberg, M. Kläui, and T. Kampfrath, “Efficient metallic spintronic emitters of ultrabroadband terahertz radiation,” Nat. Photonics 10(7), 483–488 (2016).
[Crossref]

Braun, L.

T. Seifert, S. Jaiswal, U. Martens, J. Hannegan, L. Braun, P. Maldonado, F. Freimuth, A. Kronenberg, J. Henrizi, I. Radu, E. Beaurepaire, Y. Mokrousov, P. M. Oppeneer, M. Jourdan, G. Jakob, D. Turchinovich, L. M. Hayden, M. Wolf, M. Münzenberg, M. Kläui, and T. Kampfrath, “Efficient metallic spintronic emitters of ultrabroadband terahertz radiation,” Nat. Photonics 10(7), 483–488 (2016).
[Crossref]

Brunner, F. D. J.

Butler, T.

I. Pupeza, C. Hofer, N. Lilienfein, B. Globisch, N. Karpowicz, J. Xu, and T. Butler, “Three-octave terahertz pulses from optical rectification of 20 fs, 1 μm, 78 MHz pulses in GaP,” J. Phys. B: At. Mol. Opt. Phys. 51(15), 154002 (2018).
[Crossref]

Casalbuoni, S.

S. Casalbuoni, H. Schlarb, B. Schmidt, P. Schmueser, B. Steffen, and A. Winter, “Numerical studies on the electro-optic detection of femtosecond electron bunches,” Phys. Rev. Spec. Top.--Accel. Beams 11(7), 072802 (2008).
[Crossref]

Chai, L.

J. Li, L. Chai, J. Shi, F. Liu, B. Liu, B. Xu, M. Hu, Y. Li, Q. Xing, C. Wang, A. B. Fedotov, and A. M. Zheltikov, “Generation of 0.3 mW high-power broadband terahertz pulses from GaP crystal pumped by negatively chirped femtosecond laser pulses,” Laser Phys. Lett. 10(12), 125404 (2013).
[Crossref]

Y. Li, F. Liu, Y. Li, L. Chai, Q. Xing, M. Hu, and C. Wang, “Experimental study on GaP surface damage threshold induced by a high repetition rate femtosecond laser,” Appl. Opt. 50(13), 1958–1962 (2011).
[Crossref]

Clark, S.

Dai, J.

Dexheimer, S. L.

S. L. Dexheimer, Terahertz spectroscopy: Principles and applications (CRC Press, 2017).

Drs, J.

C. Paradis, J. Drs, N. Modsching, O. Razskazovskaya, F. Meyer, C. Kränkel, C. J. Saraceno, V. J. Wittwer, and T. Südmeyer, “Broadband terahertz pulse generation driven by an ultrafast thin-disk laser oscillator,” Opt. Express 26(20), 26377 (2018).
[Crossref]

J. Drs, N. Modsching, C. Paradis, C. Kränkel, V. J. Wittwer, O. Razskazovskaya, and T. Südmeyer, “New horizons for high power broadband THz sources driven by ultrafast Yb-based thin-disk laser oscillators,” CLEO STh3F.5, (2019).

Fedotov, A. B.

J. Li, L. Chai, J. Shi, F. Liu, B. Liu, B. Xu, M. Hu, Y. Li, Q. Xing, C. Wang, A. B. Fedotov, and A. M. Zheltikov, “Generation of 0.3 mW high-power broadband terahertz pulses from GaP crystal pumped by negatively chirped femtosecond laser pulses,” Laser Phys. Lett. 10(12), 125404 (2013).
[Crossref]

Feurer, T.

Fitch, M. J.

M. J. Fitch, M. R. Leahy-Hoppa, E. W. Ott, and R. Osiander, “Molecular absorption cross-section and absolute absorptivity in the THz frequency range for the explosives TNT, RDX, HMX, and PETN,” Chem. Phys. Lett. 443(4-6), 284–288 (2007).
[Crossref]

Fobbe, F.

F. Meyer, N. Hekmat, T. Vogel, A. Omar, S. Mansourzadeh, F. Fobbe, M. Hoffmann, Y. Wang, and C. J. Saraceno, “Milliwatt-Class MHz Repetition-Rate THz Source Driven by a sub-100 fs High Power Thin-Disk Laser,” Int. Conf. IRMMW-THz 21, 1–3 (2019).
[Crossref]

Freimuth, F.

T. Seifert, S. Jaiswal, U. Martens, J. Hannegan, L. Braun, P. Maldonado, F. Freimuth, A. Kronenberg, J. Henrizi, I. Radu, E. Beaurepaire, Y. Mokrousov, P. M. Oppeneer, M. Jourdan, G. Jakob, D. Turchinovich, L. M. Hayden, M. Wolf, M. Münzenberg, M. Kläui, and T. Kampfrath, “Efficient metallic spintronic emitters of ultrabroadband terahertz radiation,” Nat. Photonics 10(7), 483–488 (2016).
[Crossref]

Fueloep, J. A.

J. A. Fueloep, S. Tzortzakis, and T. Kampfrath, “Laser-Driven Strong-Field Terahertz Sources,” Adv. Opt. Mater. 8(3), 1900681 (2020).
[Crossref]

Globisch, B.

I. Pupeza, C. Hofer, N. Lilienfein, B. Globisch, N. Karpowicz, J. Xu, and T. Butler, “Three-octave terahertz pulses from optical rectification of 20 fs, 1 μm, 78 MHz pulses in GaP,” J. Phys. B: At. Mol. Opt. Phys. 51(15), 154002 (2018).
[Crossref]

Grischkowsky, D.

Günter, P.

Han, J.-H.

Han, P. Y.

P. Y. Han, M. Tani, M. Usami, S. Kono, R. Kersting, and X. C. Zhang, “A direct comparison between terahertz time-domain spectroscopy and far-infrared Fourier transform spectroscopy,” J. Appl. Phys. 89(4), 2357–2359 (2001).
[Crossref]

Hannegan, J.

T. Seifert, S. Jaiswal, U. Martens, J. Hannegan, L. Braun, P. Maldonado, F. Freimuth, A. Kronenberg, J. Henrizi, I. Radu, E. Beaurepaire, Y. Mokrousov, P. M. Oppeneer, M. Jourdan, G. Jakob, D. Turchinovich, L. M. Hayden, M. Wolf, M. Münzenberg, M. Kläui, and T. Kampfrath, “Efficient metallic spintronic emitters of ultrabroadband terahertz radiation,” Nat. Photonics 10(7), 483–488 (2016).
[Crossref]

Hauri, C. P.

C. Vicario, B. Monoszlai, M. Jazbinsek, S. H. Lee, O. P. Kwon, and C. P. Hauri, “Intense, carrier frequency and bandwidth tunable quasi single-cycle pulses from an organic emitter covering the Terahertz frequency gap,” Sci. Rep. 5(1), 14394 (2015).
[Crossref]

Hayden, L. M.

T. Seifert, S. Jaiswal, U. Martens, J. Hannegan, L. Braun, P. Maldonado, F. Freimuth, A. Kronenberg, J. Henrizi, I. Radu, E. Beaurepaire, Y. Mokrousov, P. M. Oppeneer, M. Jourdan, G. Jakob, D. Turchinovich, L. M. Hayden, M. Wolf, M. Münzenberg, M. Kläui, and T. Kampfrath, “Efficient metallic spintronic emitters of ultrabroadband terahertz radiation,” Nat. Photonics 10(7), 483–488 (2016).
[Crossref]

Hebling, J.

M. C. Hoffmann, K. L. Yeh, H. Y. Hwang, T. S. Sosnowski, B. S. Prall, J. Hebling, and K. A. Nelson, “Fiber laser pumped high average power single-cycle terahertz pulse source,” Appl. Phys. Lett. 93(14), 141107 (2008).
[Crossref]

Hekmat, N.

F. Meyer, N. Hekmat, T. Vogel, A. Omar, S. Mansourzadeh, F. Fobbe, M. Hoffmann, Y. Wang, and C. J. Saraceno, “Milliwatt-Class MHz Repetition-Rate THz Source Driven by a sub-100 fs High Power Thin-Disk Laser,” Int. Conf. IRMMW-THz 21, 1–3 (2019).
[Crossref]

Henrizi, J.

T. Seifert, S. Jaiswal, U. Martens, J. Hannegan, L. Braun, P. Maldonado, F. Freimuth, A. Kronenberg, J. Henrizi, I. Radu, E. Beaurepaire, Y. Mokrousov, P. M. Oppeneer, M. Jourdan, G. Jakob, D. Turchinovich, L. M. Hayden, M. Wolf, M. Münzenberg, M. Kläui, and T. Kampfrath, “Efficient metallic spintronic emitters of ultrabroadband terahertz radiation,” Nat. Photonics 10(7), 483–488 (2016).
[Crossref]

Hofer, C.

I. Pupeza, C. Hofer, N. Lilienfein, B. Globisch, N. Karpowicz, J. Xu, and T. Butler, “Three-octave terahertz pulses from optical rectification of 20 fs, 1 μm, 78 MHz pulses in GaP,” J. Phys. B: At. Mol. Opt. Phys. 51(15), 154002 (2018).
[Crossref]

Hoffmann, M.

F. Meyer, N. Hekmat, T. Vogel, A. Omar, S. Mansourzadeh, F. Fobbe, M. Hoffmann, Y. Wang, and C. J. Saraceno, “Milliwatt-Class MHz Repetition-Rate THz Source Driven by a sub-100 fs High Power Thin-Disk Laser,” Int. Conf. IRMMW-THz 21, 1–3 (2019).
[Crossref]

Hoffmann, M. C.

M. C. Hoffmann, K. L. Yeh, H. Y. Hwang, T. S. Sosnowski, B. S. Prall, J. Hebling, and K. A. Nelson, “Fiber laser pumped high average power single-cycle terahertz pulse source,” Appl. Phys. Lett. 93(14), 141107 (2008).
[Crossref]

Hu, M.

J. Li, L. Chai, J. Shi, F. Liu, B. Liu, B. Xu, M. Hu, Y. Li, Q. Xing, C. Wang, A. B. Fedotov, and A. M. Zheltikov, “Generation of 0.3 mW high-power broadband terahertz pulses from GaP crystal pumped by negatively chirped femtosecond laser pulses,” Laser Phys. Lett. 10(12), 125404 (2013).
[Crossref]

Y. Li, F. Liu, Y. Li, L. Chai, Q. Xing, M. Hu, and C. Wang, “Experimental study on GaP surface damage threshold induced by a high repetition rate femtosecond laser,” Appl. Opt. 50(13), 1958–1962 (2011).
[Crossref]

Hwang, H. Y.

J. Lu, H. Y. Hwang, X. Li, S.-H. Lee, O.-P. Kwon, and K. A. Nelson, “Tunable multi-cycle THz generation in organic crystal HMQ-TMS,” Opt. Express 23(17), 22723–22729 (2015).
[Crossref]

M. C. Hoffmann, K. L. Yeh, H. Y. Hwang, T. S. Sosnowski, B. S. Prall, J. Hebling, and K. A. Nelson, “Fiber laser pumped high average power single-cycle terahertz pulse source,” Appl. Phys. Lett. 93(14), 141107 (2008).
[Crossref]

Iwaszczuk, K.

Jaiswal, S.

T. Seifert, S. Jaiswal, U. Martens, J. Hannegan, L. Braun, P. Maldonado, F. Freimuth, A. Kronenberg, J. Henrizi, I. Radu, E. Beaurepaire, Y. Mokrousov, P. M. Oppeneer, M. Jourdan, G. Jakob, D. Turchinovich, L. M. Hayden, M. Wolf, M. Münzenberg, M. Kläui, and T. Kampfrath, “Efficient metallic spintronic emitters of ultrabroadband terahertz radiation,” Nat. Photonics 10(7), 483–488 (2016).
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T. Seifert, S. Jaiswal, U. Martens, J. Hannegan, L. Braun, P. Maldonado, F. Freimuth, A. Kronenberg, J. Henrizi, I. Radu, E. Beaurepaire, Y. Mokrousov, P. M. Oppeneer, M. Jourdan, G. Jakob, D. Turchinovich, L. M. Hayden, M. Wolf, M. Münzenberg, M. Kläui, and T. Kampfrath, “Efficient metallic spintronic emitters of ultrabroadband terahertz radiation,” Nat. Photonics 10(7), 483–488 (2016).
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M. Jazbinsek, U. Puc, A. Abina, and A. Zidansek, “Organic Crystals for THz Photonics,” Appl. Sci. 9(5), 882 (2019).
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A. Rovere, Y.-G. Jeong, R. Piccoli, S.-H. Lee, S.-C. Lee, O.-P. Kwon, M. Jazbinsek, R. Morandotti, and L. Razzari, “Generation of high-field terahertz pulses in an HMQ-TMS organic crystal pumped by an ytterbium laser at 1030 nm,” Opt. Express 26(3), 2509 (2018).
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C. Vicario, B. Monoszlai, M. Jazbinsek, S. H. Lee, O. P. Kwon, and C. P. Hauri, “Intense, carrier frequency and bandwidth tunable quasi single-cycle pulses from an organic emitter covering the Terahertz frequency gap,” Sci. Rep. 5(1), 14394 (2015).
[Crossref]

J. H. Jeong, B. J. Kang, J. S. Kim, M. Jazbinsek, S. H. Lee, S. C. Lee, I. H. Baek, H. Yun, J. Kim, Y. S. Lee, J. H. Lee, J. H. Kim, F. Rotermund, and O. P. Kwon, “High-power broadband organic THz generator,” Sci. Rep. 3(1), 3200 (2013).
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J. H. Jeong, B. J. Kang, J. S. Kim, M. Jazbinsek, S. H. Lee, S. C. Lee, I. H. Baek, H. Yun, J. Kim, Y. S. Lee, J. H. Lee, J. H. Kim, F. Rotermund, and O. P. Kwon, “High-power broadband organic THz generator,” Sci. Rep. 3(1), 3200 (2013).
[Crossref]

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Jepsen, P. U.

K. J. Kaltenecker, E. J. Kelleher, B. Zhou, and P. U. Jepsen, “Attenuation of THz Beams: A "How to" Tutorial,” J. Infrared, Millimeter, Terahertz Waves 40(8), 878–904 (2019).
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A. T. Tarekegne, B. Zhou, K. Kaltenecker, K. Iwaszczuk, S. Clark, and P. U. Jepsen, “Terahertz time-domain spectroscopy of zone-folded acoustic phonons in 4H and 6H silicon carbide,” Opt. Express 27(3), 3618 (2019).
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T. Seifert, S. Jaiswal, U. Martens, J. Hannegan, L. Braun, P. Maldonado, F. Freimuth, A. Kronenberg, J. Henrizi, I. Radu, E. Beaurepaire, Y. Mokrousov, P. M. Oppeneer, M. Jourdan, G. Jakob, D. Turchinovich, L. M. Hayden, M. Wolf, M. Münzenberg, M. Kläui, and T. Kampfrath, “Efficient metallic spintronic emitters of ultrabroadband terahertz radiation,” Nat. Photonics 10(7), 483–488 (2016).
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Kaltenecker, K. J.

K. J. Kaltenecker, E. J. Kelleher, B. Zhou, and P. U. Jepsen, “Attenuation of THz Beams: A "How to" Tutorial,” J. Infrared, Millimeter, Terahertz Waves 40(8), 878–904 (2019).
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J. H. Jeong, B. J. Kang, J. S. Kim, M. Jazbinsek, S. H. Lee, S. C. Lee, I. H. Baek, H. Yun, J. Kim, Y. S. Lee, J. H. Lee, J. H. Kim, F. Rotermund, and O. P. Kwon, “High-power broadband organic THz generator,” Sci. Rep. 3(1), 3200 (2013).
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I. Pupeza, C. Hofer, N. Lilienfein, B. Globisch, N. Karpowicz, J. Xu, and T. Butler, “Three-octave terahertz pulses from optical rectification of 20 fs, 1 μm, 78 MHz pulses in GaP,” J. Phys. B: At. Mol. Opt. Phys. 51(15), 154002 (2018).
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K. J. Kaltenecker, E. J. Kelleher, B. Zhou, and P. U. Jepsen, “Attenuation of THz Beams: A "How to" Tutorial,” J. Infrared, Millimeter, Terahertz Waves 40(8), 878–904 (2019).
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J. H. Jeong, B. J. Kang, J. S. Kim, M. Jazbinsek, S. H. Lee, S. C. Lee, I. H. Baek, H. Yun, J. Kim, Y. S. Lee, J. H. Lee, J. H. Kim, F. Rotermund, and O. P. Kwon, “High-power broadband organic THz generator,” Sci. Rep. 3(1), 3200 (2013).
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J. H. Jeong, B. J. Kang, J. S. Kim, M. Jazbinsek, S. H. Lee, S. C. Lee, I. H. Baek, H. Yun, J. Kim, Y. S. Lee, J. H. Lee, J. H. Kim, F. Rotermund, and O. P. Kwon, “High-power broadband organic THz generator,” Sci. Rep. 3(1), 3200 (2013).
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J. H. Jeong, B. J. Kang, J. S. Kim, M. Jazbinsek, S. H. Lee, S. C. Lee, I. H. Baek, H. Yun, J. Kim, Y. S. Lee, J. H. Lee, J. H. Kim, F. Rotermund, and O. P. Kwon, “High-power broadband organic THz generator,” Sci. Rep. 3(1), 3200 (2013).
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T. Seifert, S. Jaiswal, U. Martens, J. Hannegan, L. Braun, P. Maldonado, F. Freimuth, A. Kronenberg, J. Henrizi, I. Radu, E. Beaurepaire, Y. Mokrousov, P. M. Oppeneer, M. Jourdan, G. Jakob, D. Turchinovich, L. M. Hayden, M. Wolf, M. Münzenberg, M. Kläui, and T. Kampfrath, “Efficient metallic spintronic emitters of ultrabroadband terahertz radiation,” Nat. Photonics 10(7), 483–488 (2016).
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P. Y. Han, M. Tani, M. Usami, S. Kono, R. Kersting, and X. C. Zhang, “A direct comparison between terahertz time-domain spectroscopy and far-infrared Fourier transform spectroscopy,” J. Appl. Phys. 89(4), 2357–2359 (2001).
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Kränkel, C.

C. Paradis, J. Drs, N. Modsching, O. Razskazovskaya, F. Meyer, C. Kränkel, C. J. Saraceno, V. J. Wittwer, and T. Südmeyer, “Broadband terahertz pulse generation driven by an ultrafast thin-disk laser oscillator,” Opt. Express 26(20), 26377 (2018).
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J. Drs, N. Modsching, C. Paradis, C. Kränkel, V. J. Wittwer, O. Razskazovskaya, and T. Südmeyer, “New horizons for high power broadband THz sources driven by ultrafast Yb-based thin-disk laser oscillators,” CLEO STh3F.5, (2019).

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T. Seifert, S. Jaiswal, U. Martens, J. Hannegan, L. Braun, P. Maldonado, F. Freimuth, A. Kronenberg, J. Henrizi, I. Radu, E. Beaurepaire, Y. Mokrousov, P. M. Oppeneer, M. Jourdan, G. Jakob, D. Turchinovich, L. M. Hayden, M. Wolf, M. Münzenberg, M. Kläui, and T. Kampfrath, “Efficient metallic spintronic emitters of ultrabroadband terahertz radiation,” Nat. Photonics 10(7), 483–488 (2016).
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C. Vicario, B. Monoszlai, M. Jazbinsek, S. H. Lee, O. P. Kwon, and C. P. Hauri, “Intense, carrier frequency and bandwidth tunable quasi single-cycle pulses from an organic emitter covering the Terahertz frequency gap,” Sci. Rep. 5(1), 14394 (2015).
[Crossref]

J. H. Jeong, B. J. Kang, J. S. Kim, M. Jazbinsek, S. H. Lee, S. C. Lee, I. H. Baek, H. Yun, J. Kim, Y. S. Lee, J. H. Lee, J. H. Kim, F. Rotermund, and O. P. Kwon, “High-power broadband organic THz generator,” Sci. Rep. 3(1), 3200 (2013).
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[Crossref]

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J. H. Jeong, B. J. Kang, J. S. Kim, M. Jazbinsek, S. H. Lee, S. C. Lee, I. H. Baek, H. Yun, J. Kim, Y. S. Lee, J. H. Lee, J. H. Kim, F. Rotermund, and O. P. Kwon, “High-power broadband organic THz generator,” Sci. Rep. 3(1), 3200 (2013).
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J. H. Jeong, B. J. Kang, J. S. Kim, M. Jazbinsek, S. H. Lee, S. C. Lee, I. H. Baek, H. Yun, J. Kim, Y. S. Lee, J. H. Lee, J. H. Kim, F. Rotermund, and O. P. Kwon, “High-power broadband organic THz generator,” Sci. Rep. 3(1), 3200 (2013).
[Crossref]

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C. Vicario, B. Monoszlai, M. Jazbinsek, S. H. Lee, O. P. Kwon, and C. P. Hauri, “Intense, carrier frequency and bandwidth tunable quasi single-cycle pulses from an organic emitter covering the Terahertz frequency gap,” Sci. Rep. 5(1), 14394 (2015).
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J. H. Jeong, B. J. Kang, J. S. Kim, M. Jazbinsek, S. H. Lee, S. C. Lee, I. H. Baek, H. Yun, J. Kim, Y. S. Lee, J. H. Lee, J. H. Kim, F. Rotermund, and O. P. Kwon, “High-power broadband organic THz generator,” Sci. Rep. 3(1), 3200 (2013).
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T. Seifert, S. Jaiswal, U. Martens, J. Hannegan, L. Braun, P. Maldonado, F. Freimuth, A. Kronenberg, J. Henrizi, I. Radu, E. Beaurepaire, Y. Mokrousov, P. M. Oppeneer, M. Jourdan, G. Jakob, D. Turchinovich, L. M. Hayden, M. Wolf, M. Münzenberg, M. Kläui, and T. Kampfrath, “Efficient metallic spintronic emitters of ultrabroadband terahertz radiation,” Nat. Photonics 10(7), 483–488 (2016).
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C. Paradis, J. Drs, N. Modsching, O. Razskazovskaya, F. Meyer, C. Kränkel, C. J. Saraceno, V. J. Wittwer, and T. Südmeyer, “Broadband terahertz pulse generation driven by an ultrafast thin-disk laser oscillator,” Opt. Express 26(20), 26377 (2018).
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C. Paradis, J. Drs, N. Modsching, O. Razskazovskaya, F. Meyer, C. Kränkel, C. J. Saraceno, V. J. Wittwer, and T. Südmeyer, “Broadband terahertz pulse generation driven by an ultrafast thin-disk laser oscillator,” Opt. Express 26(20), 26377 (2018).
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J. Drs, N. Modsching, C. Paradis, C. Kränkel, V. J. Wittwer, O. Razskazovskaya, and T. Südmeyer, “New horizons for high power broadband THz sources driven by ultrafast Yb-based thin-disk laser oscillators,” CLEO STh3F.5, (2019).

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T. Seifert, S. Jaiswal, U. Martens, J. Hannegan, L. Braun, P. Maldonado, F. Freimuth, A. Kronenberg, J. Henrizi, I. Radu, E. Beaurepaire, Y. Mokrousov, P. M. Oppeneer, M. Jourdan, G. Jakob, D. Turchinovich, L. M. Hayden, M. Wolf, M. Münzenberg, M. Kläui, and T. Kampfrath, “Efficient metallic spintronic emitters of ultrabroadband terahertz radiation,” Nat. Photonics 10(7), 483–488 (2016).
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C. Vicario, B. Monoszlai, M. Jazbinsek, S. H. Lee, O. P. Kwon, and C. P. Hauri, “Intense, carrier frequency and bandwidth tunable quasi single-cycle pulses from an organic emitter covering the Terahertz frequency gap,” Sci. Rep. 5(1), 14394 (2015).
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T. Seifert, S. Jaiswal, U. Martens, J. Hannegan, L. Braun, P. Maldonado, F. Freimuth, A. Kronenberg, J. Henrizi, I. Radu, E. Beaurepaire, Y. Mokrousov, P. M. Oppeneer, M. Jourdan, G. Jakob, D. Turchinovich, L. M. Hayden, M. Wolf, M. Münzenberg, M. Kläui, and T. Kampfrath, “Efficient metallic spintronic emitters of ultrabroadband terahertz radiation,” Nat. Photonics 10(7), 483–488 (2016).
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T. Seifert, S. Jaiswal, U. Martens, J. Hannegan, L. Braun, P. Maldonado, F. Freimuth, A. Kronenberg, J. Henrizi, I. Radu, E. Beaurepaire, Y. Mokrousov, P. M. Oppeneer, M. Jourdan, G. Jakob, D. Turchinovich, L. M. Hayden, M. Wolf, M. Münzenberg, M. Kläui, and T. Kampfrath, “Efficient metallic spintronic emitters of ultrabroadband terahertz radiation,” Nat. Photonics 10(7), 483–488 (2016).
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M. J. Fitch, M. R. Leahy-Hoppa, E. W. Ott, and R. Osiander, “Molecular absorption cross-section and absolute absorptivity in the THz frequency range for the explosives TNT, RDX, HMX, and PETN,” Chem. Phys. Lett. 443(4-6), 284–288 (2007).
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M. J. Fitch, M. R. Leahy-Hoppa, E. W. Ott, and R. Osiander, “Molecular absorption cross-section and absolute absorptivity in the THz frequency range for the explosives TNT, RDX, HMX, and PETN,” Chem. Phys. Lett. 443(4-6), 284–288 (2007).
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C. Paradis, J. Drs, N. Modsching, O. Razskazovskaya, F. Meyer, C. Kränkel, C. J. Saraceno, V. J. Wittwer, and T. Südmeyer, “Broadband terahertz pulse generation driven by an ultrafast thin-disk laser oscillator,” Opt. Express 26(20), 26377 (2018).
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I. Pupeza, C. Hofer, N. Lilienfein, B. Globisch, N. Karpowicz, J. Xu, and T. Butler, “Three-octave terahertz pulses from optical rectification of 20 fs, 1 μm, 78 MHz pulses in GaP,” J. Phys. B: At. Mol. Opt. Phys. 51(15), 154002 (2018).
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C. Paradis, J. Drs, N. Modsching, O. Razskazovskaya, F. Meyer, C. Kränkel, C. J. Saraceno, V. J. Wittwer, and T. Südmeyer, “Broadband terahertz pulse generation driven by an ultrafast thin-disk laser oscillator,” Opt. Express 26(20), 26377 (2018).
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Schneider, A.

Seifert, T.

T. Seifert, S. Jaiswal, U. Martens, J. Hannegan, L. Braun, P. Maldonado, F. Freimuth, A. Kronenberg, J. Henrizi, I. Radu, E. Beaurepaire, Y. Mokrousov, P. M. Oppeneer, M. Jourdan, G. Jakob, D. Turchinovich, L. M. Hayden, M. Wolf, M. Münzenberg, M. Kläui, and T. Kampfrath, “Efficient metallic spintronic emitters of ultrabroadband terahertz radiation,” Nat. Photonics 10(7), 483–488 (2016).
[Crossref]

Shi, J.

J. Li, L. Chai, J. Shi, F. Liu, B. Liu, B. Xu, M. Hu, Y. Li, Q. Xing, C. Wang, A. B. Fedotov, and A. M. Zheltikov, “Generation of 0.3 mW high-power broadband terahertz pulses from GaP crystal pumped by negatively chirped femtosecond laser pulses,” Laser Phys. Lett. 10(12), 125404 (2013).
[Crossref]

Sosnowski, T. S.

M. C. Hoffmann, K. L. Yeh, H. Y. Hwang, T. S. Sosnowski, B. S. Prall, J. Hebling, and K. A. Nelson, “Fiber laser pumped high average power single-cycle terahertz pulse source,” Appl. Phys. Lett. 93(14), 141107 (2008).
[Crossref]

Steffen, B.

S. Casalbuoni, H. Schlarb, B. Schmidt, P. Schmueser, B. Steffen, and A. Winter, “Numerical studies on the electro-optic detection of femtosecond electron bunches,” Phys. Rev. Spec. Top.--Accel. Beams 11(7), 072802 (2008).
[Crossref]

Stillhart, M.

Südmeyer, T.

C. Paradis, J. Drs, N. Modsching, O. Razskazovskaya, F. Meyer, C. Kränkel, C. J. Saraceno, V. J. Wittwer, and T. Südmeyer, “Broadband terahertz pulse generation driven by an ultrafast thin-disk laser oscillator,” Opt. Express 26(20), 26377 (2018).
[Crossref]

J. Drs, N. Modsching, C. Paradis, C. Kränkel, V. J. Wittwer, O. Razskazovskaya, and T. Südmeyer, “New horizons for high power broadband THz sources driven by ultrafast Yb-based thin-disk laser oscillators,” CLEO STh3F.5, (2019).

Tani, M.

P. Y. Han, M. Tani, M. Usami, S. Kono, R. Kersting, and X. C. Zhang, “A direct comparison between terahertz time-domain spectroscopy and far-infrared Fourier transform spectroscopy,” J. Appl. Phys. 89(4), 2357–2359 (2001).
[Crossref]

Tarekegne, A. T.

Turchinovich, D.

T. Seifert, S. Jaiswal, U. Martens, J. Hannegan, L. Braun, P. Maldonado, F. Freimuth, A. Kronenberg, J. Henrizi, I. Radu, E. Beaurepaire, Y. Mokrousov, P. M. Oppeneer, M. Jourdan, G. Jakob, D. Turchinovich, L. M. Hayden, M. Wolf, M. Münzenberg, M. Kläui, and T. Kampfrath, “Efficient metallic spintronic emitters of ultrabroadband terahertz radiation,” Nat. Photonics 10(7), 483–488 (2016).
[Crossref]

Turner, E. H.

D. F. Nelson and E. H. Turner, “Electro-optic and piezoelectric coefficients and refractive index of gallium phosphide,” J. Appl. Phys. 39(7), 3337–3343 (1968).
[Crossref]

Tzortzakis, S.

J. A. Fueloep, S. Tzortzakis, and T. Kampfrath, “Laser-Driven Strong-Field Terahertz Sources,” Adv. Opt. Mater. 8(3), 1900681 (2020).
[Crossref]

Usami, M.

P. Y. Han, M. Tani, M. Usami, S. Kono, R. Kersting, and X. C. Zhang, “A direct comparison between terahertz time-domain spectroscopy and far-infrared Fourier transform spectroscopy,” J. Appl. Phys. 89(4), 2357–2359 (2001).
[Crossref]

Vicario, C.

C. Vicario, B. Monoszlai, M. Jazbinsek, S. H. Lee, O. P. Kwon, and C. P. Hauri, “Intense, carrier frequency and bandwidth tunable quasi single-cycle pulses from an organic emitter covering the Terahertz frequency gap,” Sci. Rep. 5(1), 14394 (2015).
[Crossref]

Vogel, T.

F. Meyer, N. Hekmat, T. Vogel, A. Omar, S. Mansourzadeh, F. Fobbe, M. Hoffmann, Y. Wang, and C. J. Saraceno, “Milliwatt-Class MHz Repetition-Rate THz Source Driven by a sub-100 fs High Power Thin-Disk Laser,” Int. Conf. IRMMW-THz 21, 1–3 (2019).
[Crossref]

Vugmeyster, I. D.

I. D. Vugmeyster, J. F. Whitaker, and R. Merlin, “GaP based terahertz time-domain spectrometer optimized for the 5-8 THz range,” Appl. Phys. Lett. 101(18), 181101 (2012).
[Crossref]

Wallace, V. P.

E. Pickwell and V. P. Wallace, “Biomedical applications of terahertz technology,” J. Phys. D: Appl. Phys. 39(17), R301–R310 (2006).
[Crossref]

Wang, C.

J. Li, L. Chai, J. Shi, F. Liu, B. Liu, B. Xu, M. Hu, Y. Li, Q. Xing, C. Wang, A. B. Fedotov, and A. M. Zheltikov, “Generation of 0.3 mW high-power broadband terahertz pulses from GaP crystal pumped by negatively chirped femtosecond laser pulses,” Laser Phys. Lett. 10(12), 125404 (2013).
[Crossref]

Y. Li, F. Liu, Y. Li, L. Chai, Q. Xing, M. Hu, and C. Wang, “Experimental study on GaP surface damage threshold induced by a high repetition rate femtosecond laser,” Appl. Opt. 50(13), 1958–1962 (2011).
[Crossref]

Wang, Y.

F. Meyer, N. Hekmat, T. Vogel, A. Omar, S. Mansourzadeh, F. Fobbe, M. Hoffmann, Y. Wang, and C. J. Saraceno, “Milliwatt-Class MHz Repetition-Rate THz Source Driven by a sub-100 fs High Power Thin-Disk Laser,” Int. Conf. IRMMW-THz 21, 1–3 (2019).
[Crossref]

Whitaker, J. F.

I. D. Vugmeyster, J. F. Whitaker, and R. Merlin, “GaP based terahertz time-domain spectrometer optimized for the 5-8 THz range,” Appl. Phys. Lett. 101(18), 181101 (2012).
[Crossref]

Winter, A.

S. Casalbuoni, H. Schlarb, B. Schmidt, P. Schmueser, B. Steffen, and A. Winter, “Numerical studies on the electro-optic detection of femtosecond electron bunches,” Phys. Rev. Spec. Top.--Accel. Beams 11(7), 072802 (2008).
[Crossref]

Wittwer, V. J.

C. Paradis, J. Drs, N. Modsching, O. Razskazovskaya, F. Meyer, C. Kränkel, C. J. Saraceno, V. J. Wittwer, and T. Südmeyer, “Broadband terahertz pulse generation driven by an ultrafast thin-disk laser oscillator,” Opt. Express 26(20), 26377 (2018).
[Crossref]

J. Drs, N. Modsching, C. Paradis, C. Kränkel, V. J. Wittwer, O. Razskazovskaya, and T. Südmeyer, “New horizons for high power broadband THz sources driven by ultrafast Yb-based thin-disk laser oscillators,” CLEO STh3F.5, (2019).

Wolf, M.

T. Seifert, S. Jaiswal, U. Martens, J. Hannegan, L. Braun, P. Maldonado, F. Freimuth, A. Kronenberg, J. Henrizi, I. Radu, E. Beaurepaire, Y. Mokrousov, P. M. Oppeneer, M. Jourdan, G. Jakob, D. Turchinovich, L. M. Hayden, M. Wolf, M. Münzenberg, M. Kläui, and T. Kampfrath, “Efficient metallic spintronic emitters of ultrabroadband terahertz radiation,” Nat. Photonics 10(7), 483–488 (2016).
[Crossref]

Xing, Q.

J. Li, L. Chai, J. Shi, F. Liu, B. Liu, B. Xu, M. Hu, Y. Li, Q. Xing, C. Wang, A. B. Fedotov, and A. M. Zheltikov, “Generation of 0.3 mW high-power broadband terahertz pulses from GaP crystal pumped by negatively chirped femtosecond laser pulses,” Laser Phys. Lett. 10(12), 125404 (2013).
[Crossref]

Y. Li, F. Liu, Y. Li, L. Chai, Q. Xing, M. Hu, and C. Wang, “Experimental study on GaP surface damage threshold induced by a high repetition rate femtosecond laser,” Appl. Opt. 50(13), 1958–1962 (2011).
[Crossref]

Xu, B.

J. Li, L. Chai, J. Shi, F. Liu, B. Liu, B. Xu, M. Hu, Y. Li, Q. Xing, C. Wang, A. B. Fedotov, and A. M. Zheltikov, “Generation of 0.3 mW high-power broadband terahertz pulses from GaP crystal pumped by negatively chirped femtosecond laser pulses,” Laser Phys. Lett. 10(12), 125404 (2013).
[Crossref]

Xu, J.

I. Pupeza, C. Hofer, N. Lilienfein, B. Globisch, N. Karpowicz, J. Xu, and T. Butler, “Three-octave terahertz pulses from optical rectification of 20 fs, 1 μm, 78 MHz pulses in GaP,” J. Phys. B: At. Mol. Opt. Phys. 51(15), 154002 (2018).
[Crossref]

Yeh, K. L.

M. C. Hoffmann, K. L. Yeh, H. Y. Hwang, T. S. Sosnowski, B. S. Prall, J. Hebling, and K. A. Nelson, “Fiber laser pumped high average power single-cycle terahertz pulse source,” Appl. Phys. Lett. 93(14), 141107 (2008).
[Crossref]

Yun, H.

J. H. Jeong, B. J. Kang, J. S. Kim, M. Jazbinsek, S. H. Lee, S. C. Lee, I. H. Baek, H. Yun, J. Kim, Y. S. Lee, J. H. Lee, J. H. Kim, F. Rotermund, and O. P. Kwon, “High-power broadband organic THz generator,” Sci. Rep. 3(1), 3200 (2013).
[Crossref]

Zhang, J.

Zhang, W.

Zhang, X. C.

P. Y. Han, M. Tani, M. Usami, S. Kono, R. Kersting, and X. C. Zhang, “A direct comparison between terahertz time-domain spectroscopy and far-infrared Fourier transform spectroscopy,” J. Appl. Phys. 89(4), 2357–2359 (2001).
[Crossref]

Zheltikov, A. M.

J. Li, L. Chai, J. Shi, F. Liu, B. Liu, B. Xu, M. Hu, Y. Li, Q. Xing, C. Wang, A. B. Fedotov, and A. M. Zheltikov, “Generation of 0.3 mW high-power broadband terahertz pulses from GaP crystal pumped by negatively chirped femtosecond laser pulses,” Laser Phys. Lett. 10(12), 125404 (2013).
[Crossref]

Zhou, B.

K. J. Kaltenecker, E. J. Kelleher, B. Zhou, and P. U. Jepsen, “Attenuation of THz Beams: A "How to" Tutorial,” J. Infrared, Millimeter, Terahertz Waves 40(8), 878–904 (2019).
[Crossref]

A. T. Tarekegne, B. Zhou, K. Kaltenecker, K. Iwaszczuk, S. Clark, and P. U. Jepsen, “Terahertz time-domain spectroscopy of zone-folded acoustic phonons in 4H and 6H silicon carbide,” Opt. Express 27(3), 3618 (2019).
[Crossref]

Zidansek, A.

M. Jazbinsek, U. Puc, A. Abina, and A. Zidansek, “Organic Crystals for THz Photonics,” Appl. Sci. 9(5), 882 (2019).
[Crossref]

Adv. Opt. Mater. (1)

J. A. Fueloep, S. Tzortzakis, and T. Kampfrath, “Laser-Driven Strong-Field Terahertz Sources,” Adv. Opt. Mater. 8(3), 1900681 (2020).
[Crossref]

Appl. Opt. (1)

Appl. Phys. Lett. (2)

I. D. Vugmeyster, J. F. Whitaker, and R. Merlin, “GaP based terahertz time-domain spectrometer optimized for the 5-8 THz range,” Appl. Phys. Lett. 101(18), 181101 (2012).
[Crossref]

M. C. Hoffmann, K. L. Yeh, H. Y. Hwang, T. S. Sosnowski, B. S. Prall, J. Hebling, and K. A. Nelson, “Fiber laser pumped high average power single-cycle terahertz pulse source,” Appl. Phys. Lett. 93(14), 141107 (2008).
[Crossref]

Appl. Sci. (1)

M. Jazbinsek, U. Puc, A. Abina, and A. Zidansek, “Organic Crystals for THz Photonics,” Appl. Sci. 9(5), 882 (2019).
[Crossref]

Chem. Phys. Lett. (1)

M. J. Fitch, M. R. Leahy-Hoppa, E. W. Ott, and R. Osiander, “Molecular absorption cross-section and absolute absorptivity in the THz frequency range for the explosives TNT, RDX, HMX, and PETN,” Chem. Phys. Lett. 443(4-6), 284–288 (2007).
[Crossref]

Int. Conf. IRMMW-THz (1)

F. Meyer, N. Hekmat, T. Vogel, A. Omar, S. Mansourzadeh, F. Fobbe, M. Hoffmann, Y. Wang, and C. J. Saraceno, “Milliwatt-Class MHz Repetition-Rate THz Source Driven by a sub-100 fs High Power Thin-Disk Laser,” Int. Conf. IRMMW-THz 21, 1–3 (2019).
[Crossref]

J. Appl. Phys. (2)

P. Y. Han, M. Tani, M. Usami, S. Kono, R. Kersting, and X. C. Zhang, “A direct comparison between terahertz time-domain spectroscopy and far-infrared Fourier transform spectroscopy,” J. Appl. Phys. 89(4), 2357–2359 (2001).
[Crossref]

D. F. Nelson and E. H. Turner, “Electro-optic and piezoelectric coefficients and refractive index of gallium phosphide,” J. Appl. Phys. 39(7), 3337–3343 (1968).
[Crossref]

J. Infrared, Millimeter, Terahertz Waves (1)

K. J. Kaltenecker, E. J. Kelleher, B. Zhou, and P. U. Jepsen, “Attenuation of THz Beams: A "How to" Tutorial,” J. Infrared, Millimeter, Terahertz Waves 40(8), 878–904 (2019).
[Crossref]

J. Opt. Soc. Am. B (2)

J. Phys. B: At. Mol. Opt. Phys. (1)

I. Pupeza, C. Hofer, N. Lilienfein, B. Globisch, N. Karpowicz, J. Xu, and T. Butler, “Three-octave terahertz pulses from optical rectification of 20 fs, 1 μm, 78 MHz pulses in GaP,” J. Phys. B: At. Mol. Opt. Phys. 51(15), 154002 (2018).
[Crossref]

J. Phys. D: Appl. Phys. (1)

E. Pickwell and V. P. Wallace, “Biomedical applications of terahertz technology,” J. Phys. D: Appl. Phys. 39(17), R301–R310 (2006).
[Crossref]

Laser Phys. Lett. (1)

J. Li, L. Chai, J. Shi, F. Liu, B. Liu, B. Xu, M. Hu, Y. Li, Q. Xing, C. Wang, A. B. Fedotov, and A. M. Zheltikov, “Generation of 0.3 mW high-power broadband terahertz pulses from GaP crystal pumped by negatively chirped femtosecond laser pulses,” Laser Phys. Lett. 10(12), 125404 (2013).
[Crossref]

Nat. Photonics (1)

T. Seifert, S. Jaiswal, U. Martens, J. Hannegan, L. Braun, P. Maldonado, F. Freimuth, A. Kronenberg, J. Henrizi, I. Radu, E. Beaurepaire, Y. Mokrousov, P. M. Oppeneer, M. Jourdan, G. Jakob, D. Turchinovich, L. M. Hayden, M. Wolf, M. Münzenberg, M. Kläui, and T. Kampfrath, “Efficient metallic spintronic emitters of ultrabroadband terahertz radiation,” Nat. Photonics 10(7), 483–488 (2016).
[Crossref]

Opt. Express (5)

Opt. Mater. Express (1)

Phys. Rev. Spec. Top.--Accel. Beams (1)

S. Casalbuoni, H. Schlarb, B. Schmidt, P. Schmueser, B. Steffen, and A. Winter, “Numerical studies on the electro-optic detection of femtosecond electron bunches,” Phys. Rev. Spec. Top.--Accel. Beams 11(7), 072802 (2008).
[Crossref]

Sci. Rep. (2)

J. H. Jeong, B. J. Kang, J. S. Kim, M. Jazbinsek, S. H. Lee, S. C. Lee, I. H. Baek, H. Yun, J. Kim, Y. S. Lee, J. H. Lee, J. H. Kim, F. Rotermund, and O. P. Kwon, “High-power broadband organic THz generator,” Sci. Rep. 3(1), 3200 (2013).
[Crossref]

C. Vicario, B. Monoszlai, M. Jazbinsek, S. H. Lee, O. P. Kwon, and C. P. Hauri, “Intense, carrier frequency and bandwidth tunable quasi single-cycle pulses from an organic emitter covering the Terahertz frequency gap,” Sci. Rep. 5(1), 14394 (2015).
[Crossref]

Other (4)

G. P. Agrawal, Applications of Nonlinear Fiber Optics (Academic Press, 2008).

J. Drs, N. Modsching, C. Paradis, C. Kränkel, V. J. Wittwer, O. Razskazovskaya, and T. Südmeyer, “New horizons for high power broadband THz sources driven by ultrafast Yb-based thin-disk laser oscillators,” CLEO STh3F.5, (2019).

S. L. Dexheimer, Terahertz spectroscopy: Principles and applications (CRC Press, 2017).

K. Sakai, Terahertz Optoelectronics (Springer, Berlin, Heidelberg, 2005).

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Figures (6)

Fig. 1.
Fig. 1. (a) Coherence length as a function of pump wavelength and the generated THz frequency (the bandwidth of our experimental pump laser spectrum is indicated with an orange shaded area) for GaP and (b) HMQ-TMS. (c) Generated THz spectrum considering 30 fs optical pulses as a function of pump wavelength for 0.25 mm thick GaP and (d) 0.25 mm thick HMQ-TMS.
Fig. 2.
Fig. 2. Behaviour of the THz spectrum for different transform limited pump-pulses centred at 1035 nm at equal pulse energy, normalised to the 30 fs output. The modelling highlights the benefit of using shorter pump-pulses, yielding a larger bandwidth with greater efficiency.
Fig. 3.
Fig. 3. Pump laser characteristics. (a) Measured FROG trace, (b) retrieved FROG trace, (c) FROG-retrieved time trace, phase and sech $^2$ -fit, and (d) the corresponding pulse spectrum.
Fig. 4.
Fig. 4. (a) Overview of the experimental setup, with the generation crystal (1 mm thick GaP / 0.25 mm HMQ-TMS) and detection crystal (0.3 mm thick GaP). BS: Beamsplitter, WP: Wollaston Prism, QW: Quarter Waveplate. (b) Image of the crystal HMQ-TMS.
Fig. 5.
Fig. 5. (a) Normalised time trace of the generated THz field acquired through EOS for 0.25 mm thick HMQ-TMS (blue) and 1 mm thick GaP (red) at equivalent laboratory settings, showing a tenfold increase of field amplitude for HMQ-TMS over GaP and a short transient duration of 150 fs. (b) Spectrum of HMQ-TMS (shaded blue) and GaP (shaded red) normalised to the HMQ-TMS trace, with analytical modelling of expected bandwidths for a transform limited 30 fs pump pulse for HMQ-TMS (dotted red) and GaP (dotted blue).
Fig. 6.
Fig. 6. (a) Retrieved refractive index of a 525 µm thick, high resistivity, polished silicon sample over a 8.5 ps time window. The refractive index matches the literature value of 3.41 within the sample thickness uncertainty of $\pm$ 1% (blue shaded area). The frequency range with insufficient signal strength and subsequently unreliable data is greyed out. (b) The focussed THz spot size at the position of the detection crystal in the EOS setup measured by a micro-bolometer, with an overlay of Gaussian fits and the 1/e $^2$ spot radius values.

Equations (2)

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l c = λ T H z 2 ( n T H z n g ) ,
Γ = P f r e p c ϵ 0 π 2 w x w y 0 T | E r a w ( t ) | 2   d t .

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