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Optics Letters

Optics Letters


  • Vol. 36, Iss. 8 — Apr. 15, 2011
  • pp: 1329–1331

Absolute calibration of photodetectors: photocurrent multiplication versus photocurrent subtraction

I. N. Agafonov, M. V. Chekhova, T. S. Iskhakov, A. N. Penin, G. O. Rytikov, and O. A. Shcherbina  »View Author Affiliations

Optics Letters, Vol. 36, Issue 8, pp. 1329-1331 (2011)

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We report testing of the new absolute method of photodetector calibration based on the difference-signal measurement for two-mode squeezed vacuum by comparison with the traditional absolute method based on coincidence counting. Using low-gain parametric downconversion, we have measured the quantum efficiency of a counting detector by both methods. The difference-signal method was adapted for the counting detectors by taking into account the dead-time effect.

© 2011 Optical Society of America

OCIS Codes
(030.5260) Coherence and statistical optics : Photon counting
(120.3940) Instrumentation, measurement, and metrology : Metrology
(040.1345) Detectors : Avalanche photodiodes (APDs)

ToC Category:

Original Manuscript: December 22, 2010
Revised Manuscript: February 24, 2011
Manuscript Accepted: February 28, 2011
Published: April 5, 2011

I. N. Agafonov, M. V. Chekhova, T. S. Iskhakov, A. N. Penin, G. O. Rytikov, and O. A. Shcherbina, "Absolute calibration of photodetectors: photocurrent multiplication versus photocurrent subtraction," Opt. Lett. 36, 1329-1331 (2011)

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