Nanosecond Time Responses of Different Indium Antimonide Photodetectors

  • Heinz Fischer
  • Harold Rose
Part of the Developments in Applied Spectroscopy book series (DAIS, volume 2)


The time response of an InSb PEM Photodetector* [1] was recently observed to be approximately 18 nsec [2] by means of a new type nanosecond light source [3]. This response is considerably faster than that claimed by the producer and agrees with predictions derived from steady-state investigations [4], Spectral measurements with the PEM show a slower decay in the infrared which is possibly the result of a slower IR decay of the detector but may also result from an IR tail of the light pulse, a possibility which has not yet been confirmed (see Fig. 1).


Light Pulse Surface Recombination Velocity Short Light Pulse High Repetition Pulse Rate Longe Rise Time 
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    H. Fischer and P. von Thuena, Appl. Optics 1, 373 (1962).CrossRefGoogle Scholar
  3. 3.
    H. Fischer, J. Opt. Soc. Am. 51, 543 (1961).CrossRefGoogle Scholar
  4. 4.
    R.N. Zitter, A.J. Strauss, and A.E. Attard, Phys. Rev. 115, 266 (1959).CrossRefGoogle Scholar
  5. 5.
    G. Ploetz. AFCRC-TN-59–759 (1959)Google Scholar

Copyright information

© Society for Applied Spectroscopy Chicago, Illinois 1963

Authors and Affiliations

  • Heinz Fischer
    • 1
  • Harold Rose
    • 1
  1. 1.Air Force Cambridge Research LaboratoriesHanscom FieldBedfordUSA

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