Abstract
We show that cascaded second-order nonlinear-optical processes can occur in a convenient polarization-gate beam geometry. Our arrangement uses type II phase matching, and both individual second-order processes (upconversion and downconversion) are simultaneously phase matched. This geometry can be applied to efficient ultrafast optical switching. With a -barium borate crystal and lightly focused 250-fs, 7.3- pulses, we achieve a switching efficiency of 15% and an on–off ratio of on a pulse-length-limited time scale.
© 1997 Optical Society of America
Full Article | PDF ArticleMore Like This
Masaki Asobe, Itaru Yokohama, Hiroki Itoh, and Toshikuni Kaino
Opt. Lett. 22(5) 274-276 (1997)
Gary D. Landry and Theresa A. Maldonado
Opt. Lett. 22(18) 1400-1402 (1997)
S. Saltiel and Y. Deyanova
Opt. Lett. 24(18) 1296-1298 (1999)