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Optics Letters

Optics Letters


  • Editor: Anthony J. Campillo
  • Vol. 31, Iss. 6 — Mar. 15, 2006
  • pp: 691–693

Photon-number-resolving detection at a telecommunications wavelength with a charge-integration photon detector

Mikio Fujiwara and Masahide Sasaki  »View Author Affiliations

Optics Letters, Vol. 31, Issue 6, pp. 691-693 (2006)

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We demonstrate multiphoton discrimination at a telecommunications wavelength with the readout frequency of 40 Hz by a charge-integration photon detector (CIPD). The CIPD consists of an InGaAs pin photodiode and a GaAs junction field effect transistor as a preamplifier in a charge-integration circuit, which is cooled to 4.2 K to reduce thermal noise. The quantum efficiency of the CIPD (the detector itself) is 80% for 1530 nm light, and the readout noise is measured as 0.26 electrons at 40 Hz . We can construct Poisson distributions of photocarrier numbers with distinct peaks at each photocarrier number, corresponding to a signal-to-noise ratio of about 3.

© 2006 Optical Society of America

OCIS Codes
(040.3060) Detectors : Infrared
(040.3780) Detectors : Low light level
(040.5160) Detectors : Photodetectors
(040.5350) Detectors : Photovoltaic
(040.6070) Detectors : Solid state detectors

ToC Category:

Original Manuscript: October 11, 2005
Revised Manuscript: December 1, 2005
Manuscript Accepted: December 4, 2005

Mikio Fujiwara and Masahide Sasaki, "Photon-number-resolving detection at a telecommunications wavelength with a charge-integration photon detector," Opt. Lett. 31, 691-693 (2006)

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