“…Starting from the enthusiastic study of graphene, various kinds of materials, such as carbon nanotubes (CNT) [12,13,14,15], transition metal dichalcogenides (TMDs) [16,17,18,19,20,21], topological insulators (TIs) [22,23,24,25,26], and black phosphorus (BP) [27,28,29,30,31], have been employed as SAs and have successfully demonstrated pulse laser operation from visible to mid-infrared optical regions. Recently, III–VI group compounds (MX; M = Ga, In; X = Te, Se, S) have also gained widespread attention and have been applied in the areas of optoelectronic devices, nonlinear optics, ultrafast laser, and terahertz generation due to their large nonlinear effect, high damage threshold, dramatic photo-response and suitable band-gap [32,33,34,35,36,37,38,39,40,41,42,43,44,45]. For example, in 2018, Xu et al presented a mode-locked laser in the 1 μm region based on InSe as a SA [36].…”