Abstract
Near-perfect light harvesting of a metasurface-based absorber paves the way for achieving numerous potential applications in sensing, cloaking, and photovoltaics. Here, we present a reconfigurable perfect absorber based on a molybdenum ditelluride (MoTe2) hybrid metasurface at terahertz (THz) frequency. By investigating the optical response of metasurface-based absorbers, a reconfigurable switching of dual-frequency perfect absorption to a new single-frequency absorption takes place when light illuminates MoTe2. Moreover, the absorption mechanism of the hybrid metasurface is well demonstrated with the analytical coupled-dipole model and impedance analysis. The proposed reconfigurable THz meta-absorber provides a new, to the best of our knowledge, route for active radar stealth, frequency-selective detection, and next-generation wireless communication.
© 2023 Optica Publishing Group
Full Article | PDF ArticleMore Like This
Ahasan Ullah, Yi-Chieh Wang, Sanjida Yeasmin, Yijing Deng, Jun Ren, Yu Shi, Lei Liu, and Li-Jing Cheng
Opt. Lett. 47(11) 2750-2753 (2022)
Yan Dong, Zongyuan Wang, Chenjie Xiong, Bowen Deng, and Bin Hu
Opt. Lett. 48(19) 5009-5012 (2023)
Vladimir Kaydashev, Aleksandr Slavich, Ivan Domaratskiy, Sergey Zhukov, Roman Kirtaev, Dmitry Mylnikov, Georgy Alymov, Maxim Kutepov, and Evgeny Kaidashev
Appl. Opt. 62(18) 4942-4948 (2023)