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Molybdenum Disulfide Film Saturable Absorber Based on Sol–Gel Glass and Spin-Coating Used in High-Power Q-Switched Nd:YAG Laser
- Wang, Jiang, Chen, Zhendong, Wang, Yonggang, Wang, Taijin, Liu, Sicong, Chen, Guanghua, Wang, Yishan, Ren, Wei, Li, Lu
- ACS applied materials & interfaces 2020 v.12 no.8 pp. 9404-9408
- economic threshold, glass, lasers, molybdenum disulfide, sol-gel processing
- 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/cm². Saturation intensity, modulation depth, and nonsaturable loss are 9.35 MW/cm², 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.