Passively Q-switched laser based on gold nanobipyramids as saturable absorbers in the 1.3 μm region

20 W, 15 ns high-repetition-rate and high-beam- quality MOPA laser by spherical aberration self- compensation at 1342 nm

“…The high-power nanosecond laser at 1342 nm possessing high-repetition-rate and high-beam-quality has extensive applications in semiconductor manufacturing, frequency conversion, and scienti c research [1][2][3][4] . Compared to the 1064 nm laser, the 1342 nm laser has a ten times higher absorption in water and a one-third extinction in blood, making it the perfect laser source for surgical procedures.…”

MXene Ti 3 C 2 T x saturable absorber for pulsed laser at 1.3 μm

“…[6][7][8][9][10][11] Due to their special electronic and optical properties, such as high optical damage threshold, ultrafast recovery time, and controllable modulation depth, they have been applied to the fiber lasers and solid-state lasers. [12][13][14][15] However, some 2D materials need to be further optimized, for example, black phosphorus is easily oxidized, and the fabrication process of TIs is complex. So the development of promising novel nonlinear optical materials, especially the 2D materials, is still a longstanding goal.…”

Mid-infrared Er:CaF2–SrF2 bulk laser Q-switched by MXene Ti3C2T x absorber

“…Saturable absorbers (SAs) play an important role in the development of modern pulsed lasers, which are widely used in diverse fields from industrial processing to fundamental research. In recent years, two-dimensional (2D) SA materials, like graphene, [10][11][12] black phosphorus, 13,14) transition metal dichalcogenides, [15][16][17] and metal nanomaterials, [18][19][20] have been gathering increasing interest in the field of laser modulation. Of the various 2D materials, MXene has attracted attention on account of its distinct optical, electronic, and mechanical performances.…”