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Virtual Journal for Biomedical Optics

Virtual Journal for Biomedical Optics


  • Editors: Andrew Dunn and Anthony Durkin
  • Vol. 5, Iss. 14 — Nov. 16, 2010

Correction of coherence gate curvature in high numerical aperture optical coherence imaging

Benedikt W. Graf, Steven G. Adie, and Stephen A. Boppart  »View Author Affiliations

Optics Letters, Vol. 35, Issue 18, pp. 3120-3122 (2010)

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We present a method for correcting coherence gate curvature caused by scanning-induced path length variations in spectral-domain high-NA optical coherence imaging systems. These variations cause curvature artifacts in optical coherence tomography and effectively restrict the field of view in optical coherence microscopy (OCM). Here we show that the coherence gate curvature can be measured and corrected by recovering the phase of the analytic signal from a calibration image. This phase information can be used directly to process OCM images allowing the coherence gate curvature, as well as any order of system dispersion, to be corrected in a computationally efficient manner. We also discuss the use of various image quality metrics that can be used to adjust the calibrated phase in order to keep the coherence and confocal gates aligned in tissue.

© 2010 Optical Society of America

OCIS Codes
(170.1650) Medical optics and biotechnology : Coherence imaging
(170.4500) Medical optics and biotechnology : Optical coherence tomography
(180.1655) Microscopy : Coherence tomography

ToC Category:
Medical Optics and Biotechnology

Original Manuscript: June 24, 2010
Revised Manuscript: August 14, 2010
Manuscript Accepted: August 22, 2010
Published: September 15, 2010

Virtual Issues
Vol. 5, Iss. 14 Virtual Journal for Biomedical Optics

Benedikt W. Graf, Steven G. Adie, and Stephen A. Boppart, "Correction of coherence gate curvature in high numerical aperture optical coherence imaging," Opt. Lett. 35, 3120-3122 (2010)

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