Abstract

A diode-pumped Nd:YAG laser was frequency doubled to $0.532 \mathit{\mu }\mathrm{m}$ with an intracavity ${\mathrm{KTiOPO}}_4$ crystal in a V-cavity arrangement, achieving an output power of 140 W. Acousto-optic $Q$ switching was employed at repetition rates of 10–30 kHz, and the beam quality was assessed at $M^2\approx 50$. It was deduced on the basis of our model that the strength of the nonlinear frequency conversion is the main parameter determining the pulse width.

© 1998 Optical Society of America

High-power diode-pumped Q-switched intracavity frequency-doubled Nd:YVO₄ laser with a sandwich-type resonator

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