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Virtual Journal for Biomedical Optics

Virtual Journal for Biomedical Optics


  • Editors: Andrew Dunn and Anthony Durkin
  • Vol. 8, Iss. 9 — Oct. 2, 2013

Rapid time-gated polarimetric Stokes imaging using photoelastic modulators

Sanaz Alali, Tianyu Yang, and I. Alex Vitkin  »View Author Affiliations

Optics Letters, Vol. 38, Issue 16, pp. 2997-3000 (2013)

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We report a rapid time-gated full Stokes imaging approach without mechanically moving parts, which is well-suited for biomedical applications, using two photoelastic modulators (PEMs). A charge-coupled device (CCD) with microsecond time-gating capability was used to acquire the images. To synchronize the CCD with the PEMs, thus gaining signal-to-noise ratio advantage, a field programmable gate array was employed. After calibration, an evolutionary algorithm was used to select four time points from which the full Stokes vector can be recovered. Using the images taken by the camera at these four times (in 80ms), the images of the full Stokes vectors of different incident polarization states were accurately derived.

© 2013 Optical Society of America

OCIS Codes
(110.5405) Imaging systems : Polarimetric imaging
(170.6935) Medical optics and biotechnology : Tissue characterization

ToC Category:
Imaging Systems

Original Manuscript: May 31, 2013
Revised Manuscript: July 9, 2013
Manuscript Accepted: July 9, 2013
Published: August 7, 2013

Virtual Issues
Vol. 8, Iss. 9 Virtual Journal for Biomedical Optics

Sanaz Alali, Tianyu Yang, and I. Alex Vitkin, "Rapid time-gated polarimetric Stokes imaging using photoelastic modulators," Opt. Lett. 38, 2997-3000 (2013)

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