Publication

Abstract : A metasurface was designed for significant absorption of normally incident terahertz radiation in the spectral range of 2 to 8 THz. This metasurface comprises metaatoms featuring InSb-patched, InAs – patched, CdTe – patched, and unpatched pixels, strategically arranged on the illuminated face of a gold – backed polyimide substrate. Extensive simulations using commercial software have determined that the proposed metasurface design achieves remarkable maximum absorptance of 0.99, with a minimum absorptance of 0.95, within the frequency bands of 0.30893 – 0.59178 THz. The tuning capabilities of the proposed metasurface are characterized by an average tuning rate of 1.1 THz per Tesla (THzT-1) and a substantial dynamic range of 0.882 THz when subjected to a controlling magnetostatic field aligned parallel to the incident electric field. The incorporation of InSb, CdTe, and InAs patches proves vastly superior to using patches of only one of these materials.