ISSTT Proceedings

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Cyclotron Resonance Detectors for THz Frequencies

Authors:
D. Dai, C.R. Lutz, Jr., C.F. Musante, K.S. Yngvesson, K.M. Lau, E.S. Jacobs, E.R. Mueller, J. Waldman, M.A. Tischler
Abstract:
Cyclotron resonance (CR) detectors, employing the two-dimensional electron gas (2DEG) medium at the hetero-interface between AlGaAs and GaAs, have been demonstrated from 94 GHz (3.2 mm wavelength) to 2.4 THz (119 µm wavelength). Both MBE material and in-house OMVPE grown material were tested. Responsivity as high as 5,000 V/W was measured at 1.8 THz, with an estimated detector NEP about 3.3×10-12 W/[square root]Hz. In addition to the CR response, strong detection due to a Shubnikov-de Haas like effect was also demonstrated. Detection of fast laser pulses at 600 GHz (496 µm) and 1.2 THz (256 µm) at cyclotron resonance, showed that the time-constant of the detector is less than or equal to 4 ns. The time-constant when the Shubnikov-de Haas effect is employed is somewhat slower, of the order of 12-15 ns.
Categories:
Detectors, HEB Mixers
Year:
1994
Session:
2
Full-text:
Download a PDF of this paper.
Page Number(s):
189-208