Abstract
We have demonstrated high-power and high-efficient performance of a cw Nd: YAG laser with simple and scalable side-pumping coxQuration. The “um output power of 147 W was obtained with the electric efficiency of 14.8 %. Ths is to our knowledge, the highest efficiency reported for diode-side-pumped Nd: YAG lasers. High-brightness operation was also camed out by applying bifocusing compensation of the Nd: YAG md. The best beam quality of M2 = 5.9 was obtained with the output power of 107 W. The brightness is calculated to be 272 MW/cm2sr.
© 1997 Optical Society of America
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