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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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References

  1. J. B. Johnson and F. B. Llewellyn, Elec. Eng. 53, 1449–1453 (1934).
  2. B. A. Kingsbury, Phys. Rev. 38, 1458–1476 (1931).
  3. E. Steinke, Zeits. f. Physik 38, 378–403 (1926).
  4. F. V. Orbán, Zeits. F. tech. Physik 14, 137–143 (1933).
  5. E. A. Johnson and A. G. Johnson, Phys. Rev. 50, 170 (1936).
  6. E. A. Hohnson, Rev. Sci. Inst. 9, 263–266 (1938).
  7. G. L. Pearson and C. J. Christensen, Bell Sys. Tech. J. 15, 197–223 (1936).

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