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CW Laser Operation from Er:YAG, Er:GGG and Er:YSGG

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We report the first cw operation of monolithic Er:YAG, Er:GGG and Er:YSGG lasers at wavelengths near 3 µm. Pumping with a 960-970-nm Ti:sapphire or InGaAs diode laser, we have observed thresholds as low as 5 mW and power outputs as high as 190 mW, with absolute efficiencies approaching 30%.

© 1992 Optical Society of America

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