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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 38, Iss. 12 — Jun. 15, 2013
  • pp: 2098–2100

Evaluation of a fast single-photon avalanche photodiode for measurement of early transmitted photons through diffusive media

Ying Mu, Niksa Valim, and Mark Niedre  »View Author Affiliations

Optics Letters, Vol. 38, Issue 12, pp. 2098-2100 (2013)

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We tested the performance of a fast single-photon avalanche photodiode (SPAD) in measurement of early transmitted photons through diffusive media. In combination with a femtosecond titanium:sapphire laser, the overall instrument temporal response time was 59 ps. Using two experimental models, we showed that the SPAD allowed measurement of photon-density sensitivity functions that were approximately 65% narrower than the ungated continuous wave case at very early times. This exceeds the performance that we have previously achieved with photomultiplier-tube-based systems and approaches the theoretical maximum predicted by time-resolved Monte Carlo simulations.

© 2013 Optical Society of America

OCIS Codes
(170.6920) Medical optics and biotechnology : Time-resolved imaging
(110.0113) Imaging systems : Imaging through turbid media
(110.6955) Imaging systems : Tomographic imaging

ToC Category:
Imaging Systems

Original Manuscript: March 20, 2013
Revised Manuscript: May 13, 2013
Manuscript Accepted: May 13, 2013
Published: June 10, 2013

Virtual Issues
Vol. 8, Iss. 7 Virtual Journal for Biomedical Optics

Ying Mu, Niksa Valim, and Mark Niedre, "Evaluation of a fast single-photon avalanche photodiode for measurement of early transmitted photons through diffusive media," Opt. Lett. 38, 2098-2100 (2013)

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