We demonstrate a passively Q -switched diode-pumped 1.34- µm Nd:YVO4 microchip laser. We achieved single-frequency, 230-ps pulses by using an InGaAsP semiconductor saturable-absorber mirror. We can vary the pulse width and the repetition rate from 230ps to 12ns and from 30 kHz to 4 MHz, respectively, by changing the design parameters of the saturable absorber, the thickness of the crystal, and the pump power.
© 1997 Optical Society of America
R. Fluck, B. Braun, E. Gini, H. Melchior, and U. Keller, "Passively Q-switched 1.34- μm Nd:YVO4 microchip laser with semiconductor saturable-absorber mirrors," Opt. Lett. 22, 991-993 (1997)