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Miniature quantum-well microwave spectrometer operating at liquid-nitrogen temperatures
Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Technology and Media.
2005 (English)In: Applied Physics Letters, ISSN 0003-6951, E-ISSN 1077-3118, Vol. 86, no 4, p. 044101-Article in journal (Refereed) Published
Abstract [en]

We demonstrate that a two-dimensional electron system fabricated from a GaAs/AlGaAs quantum well in the presence of a magnetic field B possesses the ability to detect electromagnetic radiation in a broad frequency range. Irradiation of the sample with microwaves produces a dc-photovoltage which oscillates as a function of B. The amplitude and the period of the oscillations are proportional to the radiation power and the wavelength, respectively. Successful operation of such a detector/spectrometer is reported for microwave frequencies up to similar to150 GHz and temperatures up to similar to80 K. We do not anticipate any principal difficulties in extending the operation frequency further into the terahertz region.

Place, publisher, year, edition, pages
2005. Vol. 86, no 4, p. 044101-
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:miun:diva-9815DOI: 10.1063/1.1856143ISI: 000226761400071OAI: oai:DiVA.org:miun-9815DiVA, id: diva2:236413
Note
VR-Materials ScienceAvailable from: 2009-09-22 Created: 2009-09-22 Last updated: 2017-12-13Bibliographically approved

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Mikhailov, Sergey A

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