Abstract
We have obtained green-beam quality of at an average output power of by intracavity frequency doubling of a diode-side-pumped, Q-switched Nd:YAG rod laser with a repetition rate of and an optical-to-optical conversion efficiency of . To achieve high-beam quality at high average power, the laser employs a thermally near-unstable resonator design with two-rod birefringence compensation in an L-shaped flat–flat cavity. The output power fluctuation of the green laser remains less than in 4 h.
© 2006 Optical Society of America
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