Abstract

Enhanced efficiency and stabilized beam-power generation were proved for a high-brightness cw-based 500-W Nd:YAG rod laser by compensation of the thermally induced bifocusing of the Nd:YAG rod. Maximum laser power of 500 W cw was obtained at lamp input power of 18.4 kW, with beam quality M 2 = 19 or ωθ (radius x, the half-angle of divergence) = 6.4 mm mrad and power fluctuation of less than 1%.

© 1996 Optical Society of America

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