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Terahertz heterodyne detection with silicon field-effect transistors

Applied Physics Letters, ISSN: 0003-6951, Vol: 96, Issue: 4
2010
  • 115
    Citations
  • 0
    Usage
  • 70
    Captures
  • 0
    Mentions
  • 0
    Social Media
Metric Options:   Counts1 Year3 Year

Metrics Details

  • Citations
    115
    • Citation Indexes
      113
    • Patent Family Citations
      2
      • 2
  • Captures
    70

Article Description

We report on the detection of electromagnetic radiation at 0.65 THz by silicon field-effect transistors operated in heterodyne mode. Aiming at terahertz imaging with numerous pixels in a focal-plane array, we explore the improvement of the dynamic range achieved over power detection when the local-oscillator (LO) power is distributed quasioptically onto all detectors. These consist of resonantly antenna-coupled complementary metal-oxide- semiconductor transistors with a gate length of 0.25 μm, and each has an integrated voltage amplifier. With a LO power of 2 μW per detector, the noise-equivalent power amounts to 8 fW/Hz, leading to an estimated improvement of the dynamic range by 29 dB. © 2010 American Institute of Physics.

Bibliographic Details

Diana Glaab; Sebastian Boppel; Alvydas Lisauskas; Hartmut G. Roskos; Ullrich Pfeiffer; Erik Öjefors

AIP Publishing

Physics and Astronomy

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