Perfect light absorption in monolayer MoS2 empowered by optical Tamm states

• 作者: Yangwu Li Hua Lu Jiadeng Zheng Shichang Li Xiao Xuan Jianlin Zhao
• 来源期刊: 中国光学快报（英文版）
• 年，卷（期）: 2021,（10）
• 所属期刊栏目: Light-matter Interaction
• 页码范围: 103-108
• 页数: 6页
• 语种: 英文
• DOI: 10.3788/COL202119.103801

摘要

We present the perfect light absorption of monolayer molybdenum disulfide[MoS2]in a dielectric multilayer system with two different Bragg mirrors.The results show that the strong absorption of visible light in monolayer MoS2 is attributed to the formation of optical Tamm states[OTSs]between two Bragg mirrors.The MoS2 absorption spectrum is dependent on the layer thickness of Bragg mirrors,incident angle of light,and the period numbers of Bragg mirrors.Especially,the nearly perfect light absorption[99.4％]of monolayer MoS2 can be achieved by choosing proper period numbers,which is well analyzed by the temporal coupled-mode theory.