Graphene-based terahertz modulations enhanced with hollow metallic structures

Liangping Xia; Qianying Zheng; Man Zhang; Suihu Dang; Wenjuan Yan; Yong Tan; Shijian Huang; Hongliang Cui; Chunlei Du

doi:10.1117/12.2537512

18 November 2019 Graphene-based terahertz modulations enhanced with hollow metallic structures

Liangping Xia, Qianying Zheng, Man Zhang, Suihu Dang, Wenjuan Yan, Yong Tan, Shijian Huang, Hongliang Cui, Chunlei Du

Proceedings Volume 11196, Infrared, Millimeter-Wave, and Terahertz Technologies VI; 111960F (2019) https://doi.org/10.1117/12.2537512
Event: SPIE/COS Photonics Asia, 2019, Hangzhou, China

Abstract

To enhance the modulation of the terahertz wave in graphene based modulators, the hollow metallic structures are proposed in our works. With the field localization and enhancement raised by the resonant of the hollow metallic structures, the interaction between the graphene and the terahertz wave is enhanced. It leads to the modulation enhanced when the conductance of graphene is tuned by applied voltage. The samples with hollow square ring array structure and hollow H-cross array structure is discussed with simulations and experiments. The results indicate that the maximum modulation enhancement is achieved near the resonant frequencies.

Citation Download Citation

Liangping Xia, Qianying Zheng, Man Zhang, Suihu Dang, Wenjuan Yan, Yong Tan, Shijian Huang, Hongliang Cui, and Chunlei Du "Graphene-based terahertz modulations enhanced with hollow metallic structures", Proc. SPIE 11196, Infrared, Millimeter-Wave, and Terahertz Technologies VI, 111960F (18 November 2019); https://doi.org/10.1117/12.2537512

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