LT-GaAs metasurfaces as continuous-wave THz detectors operating in the telecommunications band

James Seddon,Lucy Hale,Hyunseung Jung, Sarah Norman,Sadhvikas Addamane,Igal Brener,Cyril Renaud,Oleg Mitrofanov

2023 48th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz)（2023）

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摘要

We present a novel approach for efficient continuous-wave (CW) detection of terahertz (THz) radiation using low-temperature-grown gallium arsenide (LT-GaAs) metasurfaces. While typical THz CW detectors require complex material growth, annealing, and device architectures, our approach demonstrates that LT-GaAs, despite its low absorption at infrared wavelengths, can be used for low-noise THz detection by nanostructuring it into a metasurface.

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关键词

complex material growth,continuous-wave detection,GaAs/int,gallium arsenide,low absorption,meta-surfaces,telecommunications band,THz CW detectors

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