Dual-Wavelength Terahertz Metasurfaces with Independent Phase and Amplitude Control at Each Wavelength.

ABSTRACT: We have designed, fabricated and characterized dual-wavelength metasurfaces that function at two assigned terahertz wavelengths with independent phase and amplitude control at each wavelength. Specifically, we have designed a dual-wavelength achromatic metasurface-based deflector deflecting the incident wave to the same direction at two selected wavelengths, which has circumvented the critical limitation of strong wavelength dependence in the planar metasurface-based devices caused by the resonant nature of the plasmonic structures. As a proof of concept demonstration, the designed dual-wavelength achromatic deflector has been fabricated, and characterized experimentally. The numerical simulations, theoretical predictions, and experimental results agree very well with each other, demonstra

SUBMITTER: Ding J 

PROVIDER: S-EPMC5034287 | biostudies-literature | 2016 Sep

REPOSITORIES: biostudies-literature