First observation of a plasmon-mediated tunable photoresponse in a grating-gated InGaAs/InP HEMT for millimeter-wave detection

Nima Nader Esfahani; Robert E. Peale; Walter R. Buchwald; Joshua R. Hendrickson; Justin W. Cleary

doi:10.1117/12.930359

15 October 2012 First observation of a plasmon-mediated tunable photoresponse in a grating-gated InGaAs/InP HEMT for millimeter-wave detection

Nima Nader Esfahani, Robert E. Peale, Walter R. Buchwald, Joshua R. Hendrickson, Justin W. Cleary

Author Affiliations +

Proceedings Volume 8512, Infrared Sensors, Devices, and Applications II; 85120Y (2012) https://doi.org/10.1117/12.930359
Event: SPIE Optical Engineering + Applications, 2012, San Diego, California, United States

Abstract

A tunable resonant photoresponse to millimeter-waves is demonstrated in a grating-gated high electron mobility transistor (HEMT) formed by an InGaAs/InP heterostructure. The gate consists of a metal grating with 9 μm period, which was designed to couple mm-radiation to plasmons in the two-dimensional electron gas (2DEG) of the HEMT. The resonant excitation of plasmons, which shifts with gate-bias, changes the channel conductance. These devices have potential as chip-scale frequency-agile mm-wave detectors, which may be scaled to THz frequencies.

Citation Download Citation

Nima Nader Esfahani, Robert E. Peale, Walter R. Buchwald, Joshua R. Hendrickson, and Justin W. Cleary "First observation of a plasmon-mediated tunable photoresponse in a grating-gated InGaAs/InP HEMT for millimeter-wave detection", Proc. SPIE 8512, Infrared Sensors, Devices, and Applications II, 85120Y (15 October 2012); https://doi.org/10.1117/12.930359

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