Title :
Optical parametric processes in the presence of strong two-photon absorption
Author :
Mu, Xiaodong ; Ding, Yujie J.
Author_Institution :
Dept. of Electr. & Comput. Eng., Lehigh Univ., Bethlehem, PA
Abstract :
Our experimental results indicate that the two-photon absorption sets the fundamental limits to optical parametric generation and oscillation in periodically-poled lithium niobate. The investigation of how the strong TPA affects the OPG and OPO pumped by a nanosecond 532-nm beam in a PPLN crystal. To our surprise, the OPG becomes more efficient for the signal generation. In addition, the TPA can be further enhanced by self-focusing caused by accumulated thermal effect (ATE) by multiple laser pusles
Keywords :
laser beams; lithium compounds; optical materials; optical parametric oscillators; optical pumping; optical self-focusing; two-photon processes; 532 nm; LiNbO3; accumulated thermal effect; laser pump; multiple laser pusles; optical parametric generation; optical parametric oscillation; optical parametric processes; periodically-poled lithium niobate; self-focusing; signal generation; two-photon absorption; Absorption; Gratings; Laser beams; Laser excitation; Nonlinear optics; Optical pulse generation; Optical pumping; Pump lasers; Stimulated emission; Tunable circuits and devices;
Conference_Titel :
Quantum Electronics and Laser Science Conference, 2005. QELS '05
Conference_Location :
Baltimore, MD
Print_ISBN :
1-55752-796-2
DOI :
10.1109/QELS.2005.1549154
