A new broadband near-millimeter wave detector using mercury-cadmium-telluride

  • Bruce A. Weber
  • Stanley M. Kulpa
4. Optics
Part of the Lecture Notes in Physics book series (LNP, volume 152)


By varying the mobility and cadmium mole fraction in samples of mercury-cadmium-telluride we have achieved a 50-fold increase in sensitivity over previous results. At 1.5 K and 105 GHz, the responsivity is approximately 50 V/W, corresponding to a Johnson-noise-limited NEP of 1.4 × 10−12\({W \mathord{\left/{\vphantom {W {\sqrt {Hz} }}} \right.\kern-\nulldelimiterspace} {\sqrt {Hz} }}\). In addition when used as a mixer, a 3 dB bandwidth of 25 MHz has been measured. The Kinch-Kogan theory of the temperature dependence of the responsivity appears to be in only qualitative agreement with the measured results.


Versus Curve Lattice Temperature Crystal Geometry Voltage Responsivity Energy Relaxation Rate 
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Copyright information

© Springer-Verlag 1982

Authors and Affiliations

  • Bruce A. Weber
    • 1
  • Stanley M. Kulpa
    • 1
  1. 1.Harry Diamond LaboratoriesUS Army Electronics Research and Development CommandAdelphiUSA

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