1.3 μm Q-switched solid-state laser based on few-layer ReS2 saturable absorber

Abstract

Abstract A novel two-dimensional saturable absorber, few-layered rhenium disulfide (ReS2), was prepared by liquid phase exfoliation method successfully. Moreover, for the first time, it was successfully employed in passively Q-switched bulk Nd:YAG lasers at 1.3\u202fμm in this paper. The maximum average output power of 78 mW was obtained with the shortest pulse width of 403\u202fns and the repetition rate of 214\u202fkHz, corresponding to single pulse energy and pulse peak power of 0.42\u202fµJ and 0.9\u202fW, respectively. The results indicate that ReS2 has the potential to be used for passive Q-switching laser generation at 1.3\u202fμm wavelength.