The energy band structure analysis and 2 μm Q-switched laser application of layered rhenium diselenide

• Published in: RSC advances Vol. 9; no. 25; pp. 14417 - 14421
• Main Authors: Yao, Yongping, Li, Xiaowen, Song, Rengang, Cui, Na, Liu, Shande, Zhang, Huiyun, Li, Dehua, Wang, Qiangguo, Xu, Yan, He, Jingliang
• Format: Journal Article
• Language: English
• Published: England Royal Society of Chemistry 08.05.2019; The Royal Society of Chemistry
• Subjects: Chemistry; Electrical properties; Laser applications; Liquid phases; Multilayers; Optical properties; Pulse duration; Q switched lasers; Rhenium; Structural analysis
• ISSN: 2046-2069; 2046-2069
• DOI: 10.1039/c9ra02311a

Layered rhenium diselenide (ReSe 2 ) has triggered strong interest because of its outstanding optical and electrical properties. In this paper, we prepared a high-quality multilayer ReSe 2 saturable absorber with a liquid-phase exfoliation method and characterized its saturable absorption properties around 2 μm. During the Q-switching regime, a maximum average output power of 1.7 W was obtained. A shortest pulse width of 925.8 ns was measured and the corresponding single pulse energy and peak power were 17.6 μJ and 19.0 W, respectively. The results indicate that layered ReSe 2 is a promising alternative as a nonlinear optical modulator near the 2 μm region. In this paper, we prepared a high-quality multilayer ReSe 2 saturable absorber with a liquid-phase exfoliation method and characterized its saturable absorption properties around 2 μm.