Abstract

We present a 120-W cw diode-pumped Tm:YAG laser. The Tm:YAG rod is side pumped by three diode arrays whose radiation is coupled through compound parabolic concentrators. The maximum optical-to-optical conversion efficiency of the 2.02µm laser output is 25.2%, with a slope efficiency of 31.2%.

© 2000 Optical Society of America

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