An Antenna-Coupled Dual-Gated Electron Channel As Direct Detector Of 2 Thz Radiation

Wladislaw Michailow, Joanna Waldie,Peter Spencer,Nikita Almond,Stephen Kindness,Yuqing Wu,Binbin Wei,Robert Wallis, Thomas Mitchell,Riccardo Degl'Innocenti,Harvey Beere,David Ritchie

2020 45TH INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER, AND TERAHERTZ WAVES (IRMMW-THZ)（2020）

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摘要

An antenna-coupled dual-gated two-dimensional electron gas (2DEG) based on a GaAs-AlGaAs heterostructure shows a pronounced response to 2 THz radiation. The device is shown to be a direct detector, and its photoresponse arises without any source-drain bias. The detection is based on a novel mechanism that yields a substantially stronger photoresponse than predicted by the classical plasma-wave self-mixing and other mechanisms.

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关键词

direct detector,2DEG,GaAs-AlGaAs heterostructure,source-drain bias,photoresponse,antenna-coupled dual-gated two-dimensional electron gas,antenna-coupled dual-gated electron channel,frequency 2.0 THz

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