Manipulating the strength and broadband of the resonators in the terahertz metamaterials

Changxiang Liu; Qingli Zhou; Chenyu Li; Cunlin Zhang

doi:10.1117/12.2295291

12 January 2018 Manipulating the strength and broadband of the resonators in the terahertz metamaterials

Changxiang Liu, Qingli Zhou, Chenyu Li, Cunlin Zhang

Proceedings Volume 10623, 2017 International Conference on Optical Instruments and Technology: IRMMW-THz Technologies and Applications; 1062304 (2018) https://doi.org/10.1117/12.2295291
Event: International Conference on Optical Instruments and Technology 2017, 2017, Beijing, China

Abstract

We investigate two dipoles which are attached or separated with the orthogonal arrangement in the terahertz frequency. These results show that the metasurface could achieve the resonance coupling and polarization conversion effect. There are two resonance dips in the transmission spectra, when these two dipoles are attached to form the L-shaped structure. With the spacing between vertical and horizontal dipoles separated, the broadband of the resonator becomes narrower and resonance dips merge into one deeper dip due to the superposition of the interaction of two dipoles. The loss of the energy is not only coupled to the free space but also converted to the cross-polarization. The broadband and the strength of the crosspolarization are modulated by changing the distance between the vertical and horizontal dipoles. Tuning the spacing, we control the co- and cross polarization of the broadband and the strength at the same time. This modulation provides the functionally potential applications in the terahertz modulators and filters.

Citation Download Citation

Changxiang Liu, Qingli Zhou, Chenyu Li, and Cunlin Zhang "Manipulating the strength and broadband of the resonators in the terahertz metamaterials", Proc. SPIE 10623, 2017 International Conference on Optical Instruments and Technology: IRMMW-THz Technologies and Applications, 1062304 (12 January 2018); https://doi.org/10.1117/12.2295291

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