An Antenna-Coupled Dual-Gated Electron Channel as Direct Detector of 2 THz Radiation
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Published version
Embargoed until: 5555-01-01
Embargoed until: 5555-01-01
Volume
2020-November
Pagination
721 - 722
DOI
10.1109/IRMMW-THz46771.2020.9370817
ISSN
2162-2027
Metadata
Show full item recordAbstract
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.