Abstract
It is shown that the coherence lengths for terahertz (THz) generation based on difference-frequency generation within an ultrafast infrared pulse can be sufficiently long for a wide bandwidth about each phase-matching wavelength owing to a slight dispersion in the THz region. As a result, quasi-single-cycle THz pulses can be efficiently generated. An efficient conversion for the parametric process is made possible not only by use of the wide phase-matching bandwidth but also by optimization of the pulse width for each peak THz frequency. I have investigated the strong-pump regime and found the limits to the conversion efficiencies to generate high peak intensities efficiently for THz waves with which to explore nonlinear regimes of the THz interactions.
© 2004 Optical Society of America
Full Article | PDF ArticleMore Like This
Mark Cronin-Golomb
Opt. Lett. 29(17) 2046-2048 (2004)
M. A. Arbore, O. Marco, and M. M. Fejer
Opt. Lett. 22(12) 865-867 (1997)
L. Becouarn, E. Lallier, M. Brevignon, and J. Lehoux
Opt. Lett. 23(19) 1508-1510 (1998)