A passively Q-switched operation of a diode-pumped Nd:YVO4 laser is demonstrated, in which a GaAs film is used as the saturable absorber as well as the output coupler. At the pump power of 10 W, a stable fundamental-mode average power output of 2.11 W was obtained with a pulse duration of 140 ns, pulse energy of 76 ?J and pulse repetition rate of 28 kHz. A theoretical analysis that describes the passive Q-switching dynamics of GaAs is presented.
© 2005 Chinese Optics Letters
Ping Li, Qingpu Wang, Shichen Li, Jie Lian, Baomin Ma, and Jingliang He, "Multi-watt Q-switched Nd:YVO4 laser with GaAs output coupler," Chin. Opt. Lett. 1, 31-33 (2003)