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F. Bammer, R. Petkovsek:
"Q-switching of a fiber laser with a single crystal photoelastic modulator";
Optics Express, 15 (2007), 10; 6 S.

A study of using a single crystal photo-elastic modulator for
active Q-switching of a fiber laser is presented. The modulator, which
oscillates in a longitudinal eigenmode, was realized with LiTaO3. This
induces due to the photo-elastic effect a modulated artificial birefringence which modulates the polarization of passing light. When used together with a polarizer inside a laser cavity the laser photon life time is strongly modulated and the laser may start to emit laser pulses. We realized this with a fiber laser based on a 5m long double clad Nd-doped fiber. The pulse repetition frequency was 400 kHz and the pulse duration 300ns.

A study of using a single crystal photo-elastic modulator for
active Q-switching of a fiber laser is presented. The modulator, which
oscillates in a longitudinal eigenmode, was realized with LiTaO3. This
induces due to the photo-elastic effect a modulated artificial birefringence which modulates the polarization of passing light. When used together with a polarizer inside a laser cavity the laser photon life time is strongly modulated and the laser may start to emit laser pulses. We realized this with a fiber laser based on a 5m long double clad Nd-doped fiber. The pulse repetition frequency was 400 kHz and the pulse duration 300ns.

Modulators; Q-switched Lasers; Fiber Lasers;

http://publik.tuwien.ac.at/files/pub-mb_5755.pdf