In this paper, a dispersion solution of rhenium diselenide (ReSe₂) was prepared using an ultrasonic decomposition method and prepared for use as a saturable absorber (SA) mirror by spin-coating. The optical characteristics of the ReSe₂ SA were characterized to acquire those parameters which were saturated at 2 μm. A passively mode-locked (PML) Tm:YAG laser with an ReSe₂ SA was first demonstrated in an experiment. Under a continuous wave (CW) regime, a 1940-mW output power was achieved at 2013.8 nm with a pump power of 22.4 W. In PML mode, a 320-mW average output power and a 580.5-ps pulse duration at 203.1 MHz were acquired from the PML Tm:YAG laser with an output wavelength of 2012.6 nm, corresponding to a pulse energy of 1.58 nJ and an optical-optical conversion efficiency of 2.2%.

在本文中，采用超声分解法制备了二硒化（（ReSe ₂）的分散液，并通过旋涂法制备了可饱和吸收体（SA）镜。表征ReSe ₂ SA的光学特性以获取在2μm处饱和的那些参数。具有ReSe _2的无源锁模（PML）Tm：YAG激光器SA最初是在实验中演示的。在连续波（CW）体制下，在2013.8 nm处实现了1940-mW的输出功率，泵浦功率为22.4W。在PML模式下，在203.1 MHz时的平均输出功率为320-mW，脉冲持续时间为580.5ps从PML Tm：YAG激光器获得，其输出波长为2012.6 nm，对应于1.58 nJ的脉冲能量和2.2％的光学转换效率。