$1.34~\mu$ m Q-Switched Nd:YVO 4 Laser Based on Perovskite Film Saturable Absorber

Hybrid organic-inorganic methylammonium lead halide (CH3NH3PbI3) perovskite with a direct band gap has emerged as a material in the development of optoelectronic devices. Here, for the first time, at 1.34 μm, we fabricated CH3NH3PbI3 perovskite film saturable absorbers by spin coating methods for passively Q-switched Nd:YVO4 laser. The CH3NH3PbI3-SA shows a damage threshold of 276.6 mJ/cm2, a modu...