12 January 2018 Switchable tri-band THz polarizing rotator based on chiral metamaterials
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Proceedings Volume 10623, 2017 International Conference on Optical Instruments and Technology: IRMMW-THz Technologies and Applications; 106230D (2018) https://doi.org/10.1117/12.2294633
Event: International Conference on Optical Instruments and Technology 2017, 2017, Beijing, China
Abstract
One kind of switchable, tri-band, terahertz linear polarizing rotator is presented in this paper, which consists of sandwiched metal chiral metamaterial structure composed of twisted electric field-coupled resonators in C4 symmetry and a VO2 film on substrate for active controlling. The polarizing rotation is switchable with the state change of VO2 from an insulator to metal. Simulated results consistently demonstrate that the switchable rotator exhibits extremely low loss, high polarization conversion ratio and optical activity at the three resonance frequencies. The influence of different geometric parameters of the chiral metamaterial structure is investigated to optimize the multiband rotating response of the polarizing rotator. This switchable terahertz metamaterial-based rotator has various potential applications in terahertz wave controlling and the terahertz functional devices.
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Yuying Lu, Yuying Lu, Jining Li, Jining Li, Jianquan Yao, Jianquan Yao, } "Switchable tri-band THz polarizing rotator based on chiral metamaterials", Proc. SPIE 10623, 2017 International Conference on Optical Instruments and Technology: IRMMW-THz Technologies and Applications, 106230D (12 January 2018); doi: 10.1117/12.2294633; https://doi.org/10.1117/12.2294633
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