Abstract
We generated subpicosecond pulses from 8 to 18 µm by difference-frequency mixing in a 1-mm-thick AgGaSe2 crystal, the 130- and 180-fs output pulses (1.45 < λ < 1.85 µm) from an 84-MHz-repetition-rate optical parametric oscillator. Numerical simulations show that intrapulse and interpulse group velocity dispersion determine minimum pulse duration above and below 15 µm, respectively. By cross correlation (upconversion) of 10.5-µm pulses with 90-fs, 810-nm pulses in AgGaS2, the pulse length was measured to be 310 fs in good agreement with simulations.
© 1997 Optical Society of America
Full Article | PDF ArticleMore Like This
R. A. Kaindl, D. C. Smith, M. Joschko, M. P. Hasselbeck, M. Woerner, and T. Elsaesser
Opt. Lett. 23(11) 861-863 (1998)
J. Hong, A. D. O. Bawagan, S. Charbonneau, and Albert Stolow
Appl. Opt. 36(9) 1894-1897 (1997)
Valentin Petrov, Frank Noack, and Richard Stolzenberger
Appl. Opt. 36(6) 1164-1172 (1997)