Abstract

By cooling the chopping blade, the recovery time of a thermal detector can be reduced to a negligible fraction of the chopping cycle. The possible gains in chopping frequency and responsivity are analyzed and calculated for the case of square-wave chopping. Disadvantages, such as distortion of the detector output waveform, are also analyzed.

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  1. l. R. C. Jones, Advances in Electronics (Academic Press, Inc., New York, 1953) pp. 1โ€“96.
  2. R. C. Jones, Proc. IRE 47, 1481 and 1495 (1959).
  3. R. A. Smith, F. E. Jones, and R. P. Chasmar, The Detection and Measurement of Infrared Radiation (Oxford University Press, New York, 1957), especially Chaps. 3 and 7.
  4. M. Jakob, Heat Transfer (John Wiley & Sons, 1957), Vol. II, Chap. 31.

Chasmar, R. P.

R. A. Smith, F. E. Jones, and R. P. Chasmar, The Detection and Measurement of Infrared Radiation (Oxford University Press, New York, 1957), especially Chaps. 3 and 7.

Jakob, M.

M. Jakob, Heat Transfer (John Wiley & Sons, 1957), Vol. II, Chap. 31.

Jones, F. E.

R. A. Smith, F. E. Jones, and R. P. Chasmar, The Detection and Measurement of Infrared Radiation (Oxford University Press, New York, 1957), especially Chaps. 3 and 7.

Jones, R. C.

l. R. C. Jones, Advances in Electronics (Academic Press, Inc., New York, 1953) pp. 1โ€“96.

R. C. Jones, Proc. IRE 47, 1481 and 1495 (1959).

Smith, R. A.

R. A. Smith, F. E. Jones, and R. P. Chasmar, The Detection and Measurement of Infrared Radiation (Oxford University Press, New York, 1957), especially Chaps. 3 and 7.

Other (4)

l. R. C. Jones, Advances in Electronics (Academic Press, Inc., New York, 1953) pp. 1โ€“96.

R. C. Jones, Proc. IRE 47, 1481 and 1495 (1959).

R. A. Smith, F. E. Jones, and R. P. Chasmar, The Detection and Measurement of Infrared Radiation (Oxford University Press, New York, 1957), especially Chaps. 3 and 7.

M. Jakob, Heat Transfer (John Wiley & Sons, 1957), Vol. II, Chap. 31.

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