34.7 W passive peak power Q-switch Ho:Sc2SiO5 laser operating at 2 μm with a few-layer molybdenum disulfide saturable absorber

A high-performance passively Q-switched Tm:YAP laser with a TaSe2 saturable absorber

“…As the synthesis technique of two-dimensional (2D) materials improves, some new 2D materials have excellent properties which have attracted much attention from laser experts and are used as optical modulators to promote the output performance of 2 µm pulsed lasers. Now, many typical 2D materials including graphene, transition metal dichalcogenides (TMDs) [10,11], heterostructures [12], topographies (Tis) [13], MXenes [14] and black phosphenes (BP) [15] have been prepared and demonstrated as outstanding saturable absorbers (SAs) to modulate pulsed lasers owing to their excellent properties, such as fast recovery time, wide absorption range and high damage threshold [16]. In recent years, Tm 3+ doped crystals were used as laser gain medium and 2D-based SAs were used as modulators in the experiment, therefore, a lot of excellent research results have been acquired [17].…”