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We have analyzed the stability of a high-power diode-side-pumped intracavity-frequency-doubled CW Nd:YAG laser. It is found that large green power fluctuations observed experimentally are suppressed by compensating thermal lensing of the nonlinear crystal KTP and that of the Nd:YAG rods with an advanced resonator design. Stable CW green powers of 27 W with a beam quality of M/sup 2/=8 and 16 W with M/sup 2/=1.2 (TEM/sub 00/-mode) were generated.
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Kojima et al. (1999) studied this question.
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