期刊
APPLIED PHYSICS LETTERS
卷 81, 期 24, 页码 4637-4639出版社
AMER INST PHYSICS
DOI: 10.1063/1.1525851
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We report on the experiments on resonant photoresponse of the gated two-dimensional electron gas to the terahertz radiation. The visible-light-induced, metastable increase of the carrier density in the transistor channel shifts the resonance position to the higher gate voltages, in agreement with plasma wave detection theory. In this way, an unambiguous proof of the origin of the observed resonant detection is provided. The visible light illumination also leads to an increase of the electron mobility and, as a result, to an increase of the resonant detection quality factor. Resonant detection of the harmonics of the Gunn diode-based emission system is demonstrated up to 1.2 THz. (C) 2002 American Institute of Physics.
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