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1.36 W Passively Q-Switched YVO 4 /Nd:YVO 4 Laser With a WS 2 Saturable Absorber

2017; Institute of Electrical and Electronics Engineers; Volume: 29; Issue: 5 Linguagem: Inglês

10.1109/lpt.2017.2657325

1941-0174

Wenjing Tang, Yonggang Wang, Kejian Yang, Jia Zhao, Shengzhi Zhao, Guiqiu Li, Dechun Li, Tao Li, Wenchao Qiao,

Photorefractive and Nonlinear Optics

By using WS 2 as saturable absorber (SA), a diode-pumped passively $Q$ -switched YVO 4 /Nd:YVO 4 laser is demonstrated. Under the pump power of 6.28 W, a maximum output power of 1.36 W and minimum pulse duration of 56 ns with a repetition rate of 1.03 MHz are obtained, resulting in a peak power of as high as 23.6 W. So far as we know, it is the shortest pulse duration in $Q$ -switched lasers with 2-D materials. The experimental results show that WS 2 is an excellent SA for all-solid-state $Q$ -switched lasers.