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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 30, Iss. 22 — Aug. 1, 1991
  • pp: 3091–3099

Fourteen-decade photocurrent measurements with large-area silicon photodiodes at room temperature

G. Eppeldauer and J. E. Hardis  »View Author Affiliations


Applied Optics, Vol. 30, Issue 22, pp. 3091-3099 (1991)
http://dx.doi.org/10.1364/AO.30.003091


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Abstract

Recent improvements in commercial silicon photodiodes and operational amplifiers permit electrical noise to be reduced to an equivalent of 0.1 fA of photocurrent when a measurement time of 400 s is used. This is equivalent to a photocurrent resulting from fewer than 800 photons/s, and it implies a dynamic range of 14 orders of magnitude for a detector circuit. We explain the circuit theory, paying particular attention to the measurement bandwidth, the causes of noise and drift, and the proper selection of circuit components. These optical radiation detectors complement the primary radiometric standards. These detectors may replace photomultiplier tubes that have been used traditionally and or that were too costly to be used.

© 1991 Optical Society of America

History
Original Manuscript: October 12, 1990
Published: August 1, 1991

Citation
G. Eppeldauer and J. E. Hardis, "Fourteen-decade photocurrent measurements with large-area silicon photodiodes at room temperature," Appl. Opt. 30, 3091-3099 (1991)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-30-22-3091

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