材料科学
激光器
饱和吸收
钒
剥脱关节
Q开关
脉冲宽度调制
脉搏(音乐)
金属
二硫化钼
带隙
单层
纳米材料
激光功率缩放
光学
分子物理学
光电子学
功率(物理)
纳米技术
光纤激光器
石墨烯
化学
物理
热力学
复合材料
冶金
探测器
作者
Ziqun Niu,Tianli Feng,Tao Li,Kejian Yang,Jia Zhao,Guiqiu Li,Dechun Li,Shengzhi Zhao,Wenchao Qiao,Hongwei Chu,Yizhou Liu,Kong Gao
出处
期刊:Nanomaterials
[MDPI AG]
日期:2021-10-03
卷期号:11 (10): 2605-2605
被引量:9
摘要
In the current study, layered metallic vanadium disulfide (VS2) is fabricated by a liquid-phase exfoliation method, and its microstructures as well as optical characteristics are investigated. Based on first-principles calculations, the band structure and density of the states of both bulk T-VS2 and monolayer H-VS2 are illustrated, showing the metallic behavior with a zero band gap. By using VS2 as the saturable absorber in a doubly Q-switched Tm:YAP laser with an EOM, the Q-switching laser pulses at 2 μm with 22 ns and 200 Hz are generated, corresponding to the single pulse energy of 755 μJ and the peak power of 34.3 kW. The coupled rate equations of the doubly Q-switched laser are given, and the numerical simulations agree with the experimental results. The results indicate that VS2 is a promising nanomaterial due to its nonlinear optical property. The doubly Q-switched laser demonstrates a high level of performance in reducing pulse width and enhancing pulse peak power.
科研通智能强力驱动
Strongly Powered by AbleSci AI