Abstract
We report passively -switched and mid-infrared (MIR) solid-state lasers with a self-assembly solvothermal-synthesized heterostructure saturable absorber (SA) for the first time. Based on the oxidation resistance and high thermal conductivity of graphene, and large modulation depth of nanosheets, two high-performance -switching lasers were realized. One is a Tm:YAP laser with a maximum average output power of 2.34 W and a pulse width of 238 ns at . The corresponding maximum pulse peak power was 91 W, which was much improved in comparison with the pure graphene-based Tm laser. The other one is an Er:YSGG laser producing a pulse width of 243 ns, which is the shortest among the 2D SAs-based solid-state lasers, as far as we know. Our results indicate that such a composite material is a promising SA for generating high-performance mid-infrared pulse lasers.
© 2017 Optical Society of America
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