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Journal of the Optical Society of America

Journal of the Optical Society of America

  • Vol. 35, Iss. 12 — Dec. 1, 1945
  • pp: 755–759

Alternating-Current Bolometer for Infra-Red Spectroscopy

C. H. SCHLESMAN and FRANK G. -BROCKMAN  »View Author Affiliations

JOSA, Vol. 35, Issue 12, pp. 755-759 (1945)

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An alternating-current bolometer system has been developed for detecting and recording radiant energy in infra-red spectroscopy. Almost constant use over a ten-months’ period dictates certain improvements which are pointed out. The useful sensitivity is limited now by fluctuations originating in the power supply to the bolometer bridge.

C. H. SCHLESMAN and FRANK G. -BROCKMAN, "Alternating-Current Bolometer for Infra-Red Spectroscopy," J. Opt. Soc. Am. 35, 755-759 (1945)

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  1. Parry Moon, J. Frank. Inst. 219, 17 (1935).
  2. Parry Moon and W. R. Mills, Jr., Rev. Sci. Inst. 6, 8 (1935).
  3. E. Lehrer, Zeits. f. tech. Physik 18, 393 (1937), has described a bolometer system which uses alternatingcurrent amplification. This system, however, differs in principle from the one described here. In that described by Lehrer, modulation of the bolometer output is obtained by periodically interrupting the radiation entering the spectrograph.
  4. Frank G. Brockman, J. Opt. Soc. Am., to be published.
  5. Tuning by a bridged T network in the inverse feed-back circuit was described by H. H. Scott, Proc. I. R. E. 26, 226 (1938).
  6. S. E. Miller, Electronics 14, 27 (November, 1941).

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