Abstract
We have demonstrated temperature rises that result from nonlinear absorption in single-pass frequency-doubling experiments using femtosecond pulses and a 3-mm-thick crystal. These temperature changes shift the phase-matching curve and must be accounted for to optimize the conversion efficiency. We obtained a maximum second-harmonic generation (SHG) efficiency of 66% at an input power of 107 mW and a slope efficiency of ∼1.5%/mW at low input powers. We have investigated, for the first time to our knowledge, the focusing dependence of the phase-matching temperature. We have also found that the temperature-dependent SHG efficiency in femtosecond SHG experiments is significantly different from that obtained for frequency doubling of continuous-wave light.
© 1999 Optical Society of America
Full Article | PDF ArticleMore Like This
A. M. Weiner, A. M. Kan’an, and D. E. Leaird
Opt. Lett. 23(18) 1441-1443 (1998)
Yong-qing Li, Dorel Guzun, Greg Salamo, and Min Xiao
J. Opt. Soc. Am. B 20(6) 1285-1289 (2003)
Yong-qing Li, Dorel Guzun, and Min Xiao
Opt. Lett. 24(14) 987-989 (1999)