Broadband THz reflective polarization rotator by multiple plasmon resonances | Zendy

Xiewen Wen | Zendy; Junrong Zheng | Zendy

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Broadband THz reflective polarization rotator by multiple plasmon resonances

Author(s) -

Xiewen Wen,

Junrong Zheng

Publication year - 2014

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.22.028292

Subject(s) - terahertz radiation , optics , metamaterial , broadband , polarization (electrochemistry) , plasmon , polarization rotator , split ring resonator , polarimetry , circular polarization , photonic metamaterial , surface plasmon , surface plasmon resonance , optoelectronics , linear polarization , materials science , physics , scattering , birefringence , chemistry , nanoparticle , nanotechnology , microstrip , laser

We demonstrate a metamaterials-based THz broadband polarization rotator which is able to rotate linearly polarized THz wave by 90 degree within a wide frequency range (0.44 to 0.76 THz). The device is characterized both theoretically and experimentally. Analyses show that the multiple-plasmon-resonance is the key for the broadband feature and the phase-shift difference of the two reflection components is critical for the polarization conversion. The approach demonstrated in the work can be useful for constructing building blocks for THz polarimetry.

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