Abstract

The passively $Q$-switched Er:YAG laser at 1.6 μm was achieved with a YAG-based ${\mathrm{MoS}}_2$ saturable absorber (SA) for the first time. The saturable absorption properties of the ${\mathrm{MoS}}_2$ SA near 1.6 μm were investigated. Under an absorbed pump power of 8.09 W, an average output power of 1.08 W with a pulse duration of 1.138 μs and a repetition rate of 46.6 kHz was obtained, corresponding to an optical conversion efficiency of 40.67%. The pulse energy and peak power were calculated to be 23.08 μJ and 20.28 W, respectively.

© 2017 Optical Society of America

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