Molybdenum Disulfide Film Saturable Absorber Based on Sol–Gel Glass and Spin-Coating Used in High-Power Q-Switched Nd:YAG Laser

作者：Jiang Wang, Zhendong Chen, Yonggang Wang, Yonggang Wang, Taijin Wang, Sicong Liu, Guanghua Chen, Yishan Wang, Yishan Wang, Wei Ren, Lu Li · 发表于：ACS Applied Materials & Interfaces · 年份：2020 · DOI：10.1021/acsami.9b14494 · 被引用次数：18 · 研究领域：Advanced Fiber Laser Technologies、Solid State Laser Technologies、Photonic Crystal and Fiber Optics

In recent years, many different kinds of nonlinear optical materials have been applied to passively Q-switched solid-state lasers. However, the average output powers of these lasers are typically limited to 1 W due to the low damage threshold of the materials. In this study, a molybdenum-disulfide-doped glass-composite absorber was synthesized using the sol–gel method and spin-coating technique. The optical damage threshold of the absorber reached 3.17 J/cm 2 . Saturation intensity, modulation depth, and nonsaturable loss are 9.35 MW/cm 2, 8.41%, and 9.14%, respectively. After inserting the absorber into a linear Nd:YAG laser cavity, the maximum average output power (3.22 W) and stable Q-switched laser pulses duration (132 ns) were obtained.