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Journal of the Optical Society of America

Journal of the Optical Society of America

  • Vol. 29, Iss. 12 — Dec. 1, 1939
  • pp: 506–511

The Limiting Sensitivity of the Alternating-Current Method of Photo-Cell-Current Amplification

E. A. JOHNSON, W. H. MOCK, and R. E. HOPKINS  »View Author Affiliations


JOSA, Vol. 29, Issue 12, pp. 506-511 (1939)
http://dx.doi.org/10.1364/JOSA.29.000506


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Abstract

The limiting sensitivity of an alternating-current system of amplification is considered. The practical limit is determined theoretically and experimentally for measured circuit parameters. A particular circuit using an electrometer-tube and a cesium-antimony cell is shown to be capable of detecting 4.5×10−15 watt in 30 seconds. Data on various input-tubes and photoelectric cells are given.

Citation
E. A. JOHNSON, W. H. MOCK, and R. E. HOPKINS, "The Limiting Sensitivity of the Alternating-Current Method of Photo-Cell-Current Amplification," J. Opt. Soc. Am. 29, 506-511 (1939)
http://www.opticsinfobase.org/josa/abstract.cfm?URI=josa-29-12-506

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