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Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 36, Iss. 13 — Jul. 1, 2011
  • pp: 2501–2503

Time-gating scheme based on a photodiode for single-photon counting

Patrick D. Kumavor, Behnoosh Tavakoli, Eric Donkor, and Quing Zhu  »View Author Affiliations


Optics Letters, Vol. 36, Issue 13, pp. 2501-2503 (2011)
http://dx.doi.org/10.1364/OL.36.002501


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Abstract

A fast, simple, and low-cost optical time-gating scheme for counting single photons is presented. Its construction consists of a silicon photodiode connected in series with a 50 Ω resistor and that operates in the photoconductive mode. The temporal resolution at the FWHM of the photon counting system was measured to be 62 ps . The profile of a single-photon pulse measured with the counting system agreed well with analytical results. The system was also used to successfully resolve a pair of targets with 4 mm separation inside a highly scattering medium by the use of time-gated early-arriving photons.

© 2011 Optical Society of America

OCIS Codes
(040.5160) Detectors : Photodetectors
(170.6920) Medical optics and biotechnology : Time-resolved imaging

ToC Category:
Detectors

History
Original Manuscript: April 5, 2011
Revised Manuscript: May 27, 2011
Manuscript Accepted: June 3, 2011
Published: June 24, 2011

Virtual Issues
Vol. 6, Iss. 8 Virtual Journal for Biomedical Optics

Citation
Patrick D. Kumavor, Behnoosh Tavakoli, Eric Donkor, and Quing Zhu, "Time-gating scheme based on a photodiode for single-photon counting," Opt. Lett. 36, 2501-2503 (2011)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-36-13-2501


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