Single-frequency operation of diode-laser-array transverse-pumped Q-switched Nd:YAG laser

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Abstract
Single-longitudinal-mode and single-transverse-mode operation of a miniature Nd:YAG laser transversely pumped by a quasi-CW diode-laser array is described. By injectionseeding this oscillator with a diode-laser end-pumped Nd:YAG microlaser, single-frequency Q-switched pulses of 0·25 mJ energy and 35 ns duration were generated.