Abstract

A 1.86 W cw single-frequency 1319 nm laser was produced by using an 885 nm-pumped Nd:YAG crystal with a compact four-mirror ring cavity, for the first time to our knowledge. The Nd:YAG produced a slope efficiency of 21% and an optical-to-optical efficiency of 18% with respect to the absorbed diode pump power. A near-diffraction-limited beam with $M^2=1.2$ was achieved under the maximum output power.

©2012 Optical Society of America

Dual-wavelength Nd:YAG laser operation at 1319 and 1338  nm by direct pumping at 885  nm

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