Ultrathin electromagnetic absorbers for mm- and submm-waves: from fundamentals towards applications in bolometric sensors

Sergey A. Kuznetsov; Andrey V. Arzhannikov; Manfred Thumm; Andrey G. Paulish; Alexander V. Gelfand; Victor N. Fedorinin; Miguel Beruete; Miguel Navarro-Cía; Mario Sorolla

META 2021, META'12

Sergey A. Kuznetsov, Andrey V. Arzhannikov, Manfred Thumm, Andrey G. Paulish, Alexander V. Gelfand, Victor N. Fedorinin, Miguel Beruete, Miguel Navarro-Cía, Mario Sorolla

Last modified: 2011-12-05

Abstract

We overview the results of theoretical and on-going experimental investigations of electrically ultra-thin metamaterial-inspired absorbers operating in the range of millimetre and submillimetre waves and intended for integration with spectrally-selective bolometric devices. The attainability of values up to 180 for the ratio of the free-space wavelength to the absorber’s thickness is experimentally demonstrated. The first prototypes of imaging and spectrophotometric detectors utilizing metamaterial-based radiation-sensitive pixels are presented.

Keywords

metamaterials; absorbers; terahertz; bolometric detectors