Journal
OPTICS EXPRESS
Volume 27, Issue 7, Pages 9773-+Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.27.009773
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Funding
- National Natural Science Foundation of China (NSFC) [11474041]
- Scientific and Technological Developing Scheme of Jilin Province [20180101281JC]
- 135 Research Project of Education Bureau of Jilin Province [JJKH20190579KJ]
- 111 Project of China [D17017]
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We propose a three layered metal-graphene-metal metasurface to investigate the controllable linear asymmetric transmission and perfect polarization conversion in THz regime. by using the funte-difference time-domain (FDTD) method. An on-to-off control of asymmetric transmission and perfect polarization conversion is achieved by changing the Fermi energy of graphene from 0.8 eV to 0 eV. We present the electric field distribution and Fabry-Perot-like cavity model to analyze the working mechanisms. By gradually shifting the Fermi energy of graphene. two functions are realized. i.e., controllable linear asymmetric transmission and controllable total transmission with near perfect polarization conversion. (C) 2019 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
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