Abstract

A continuous-wave and Q-switched 10 kHz ${\mathrm{GdVO}}_4/\mathrm{Nd}\text{:}{\mathrm{GdVO}}_4$ laser by 879 nm laser-diode pumping was demonstrated. We combined dual-end-$\pi$-polarized-pumping, half-wave plate (HWP) insertion, composite laser crystals, and dual Q-switching techniques to obtain a 1.06 μm nanosecond laser with high temporal and spatial quality. A polarization beam splitter was used to divide the unpolarized pump beam into two linearly polarized beams to increase the absorption efficiency. The output performance was improved obviously by inserting a HWP into the cavity. The pulse duration was compressed and the peak power was increased for a doubly Q-switched laser, in contrast to a single acousto-optical Q-switched laser under the same conditions.

©2012 Optical Society of America

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