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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 15 — Jul. 18, 2011
  • pp: 14568–14585

Speckle noise reduction in high speed polarization sensitive spectral domain optical coherence tomography

Erich Götzinger, Michael Pircher, Bernhard Baumann, Tilman Schmoll, Harald Sattmann, Rainer A. Leitgeb, and Christoph K. Hitzenberger  »View Author Affiliations


Optics Express, Vol. 19, Issue 15, pp. 14568-14585 (2011)
http://dx.doi.org/10.1364/OE.19.014568


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Abstract

We present a high speed polarization sensitive spectral domain optical coherence tomography system based on polarization maintaining fibers and two high speed CMOS line scan cameras capable of retinal imaging with up to 128 k A-lines/s. This high imaging speed strongly reduces motion artifacts and therefore averaging of several B-scans is possible, which strongly reduces speckle noise and improves image quality. We present several methods for averaging retardation and optic axis orientation, the best one providing a 5 fold noise reduction. Furthermore, a novel scheme of calculating images of degree of polarization uniformity is presented. We quantitatively compare the noise reduction depending on the number of averaged frames and discuss the limits of frame numbers that can usefully be averaged.

© 2011 OSA

OCIS Codes
(170.4470) Medical optics and biotechnology : Ophthalmology
(170.4500) Medical optics and biotechnology : Optical coherence tomography
(170.4580) Medical optics and biotechnology : Optical diagnostics for medicine
(230.5440) Optical devices : Polarization-selective devices

ToC Category:
Medical Optics and Biotechnology

History
Original Manuscript: January 19, 2011
Revised Manuscript: June 19, 2011
Manuscript Accepted: July 1, 2011
Published: July 14, 2011

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

Citation
Erich Götzinger, Michael Pircher, Bernhard Baumann, Tilman Schmoll, Harald Sattmann, Rainer A. Leitgeb, and Christoph K. Hitzenberger, "Speckle noise reduction in high speed polarization sensitive spectral domain optical coherence tomography," Opt. Express 19, 14568-14585 (2011)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-19-15-14568


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