Investigation of reflectance spectra of the THz plasmonic structures developed on metal surface

V. Janonis,S. Indrisiunas,Bogdan Voisiat,S. Tumenas,Gediminas Račiukaitis,Irmantas Kašalynas

2017 42nd International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz)（2017）

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摘要

Terahertz (THz) plasmonic structures of subwavelenght rectangular apertures in a periodic square lattice were developed on aluminum surface. By varying the incident angle, the reflectance spectra of the plasmonic samples were measured with far-infrared Fourier transform spectrometer in the frequency range of 1-15 THz. The change in the design of subwavelenght apertures revealed the resonant features which were dominated by spoof plasmon effects in the THz region.

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关键词

reflectance spectra,terahertz plasmonic structures,metal surface,subwavelength rectangular apertures,periodic square lattice,aluminum surface,far-infrared Fourier transform spectrometer,spoof plasmon effects,frequency 1 THz to 15 THz,Al

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