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A Broadband THz Cutline Metamaterial Absorber

P. Deshmukh [1], B. R. Sangala [1], G. Rana [2], S. S. Prabhu [1],
[1] Tata Institute of Fundamental Research, Mumbai,India
[2] Indian Institute of Technology Bombay, Mumbai, India

Publié en 2015

We demonstrate a broadband metamaterial (MM) absorber for THz frequencies. The MM was characterized in the spectral region of 0.3 - 3 THz with THz Time domain spectroscopy (TDS) using 1 mm ZnTe crystal for Electro-optic detection. A strong broadband resonance is observed, centered around 1.8 THz when the cut lines are aligned along the polarization of the THz electric field (0 degree). The Full width at half maximum (FWHM) of the resonance is ~ 1 THz. No such resonance is observed when the cut lines are aligned perpendicular to the THz electric field (90 degree).

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