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Optics Letters

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  • Editor: Anthony J. Campillo
  • Vol. 31, Iss. 9 — May. 1, 2006
  • pp: 1271–1273

Resolving the complex conjugate ambiguity in Fourier-domain OCT by harmonic lock-in detection of the spectral interferogram

Andrei B. Vakhtin, Kristen A. Peterson, and Daniel J. Kane  »View Author Affiliations


Optics Letters, Vol. 31, Issue 9, pp. 1271-1273 (2006)
http://dx.doi.org/10.1364/OL.31.001271


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Abstract

A method of resolving the complex conjugate ambiguity in Fourier-domain OCT is described. The complex differential spectral interferogram is obtained by simultaneous acquisition of the first and second harmonics of the ac component of the phase-modulated interferogram. The harmonics represent the imaginary and real parts of the interferogram, respectively. The complex conjugate rejection ratio is found to be at least 45 dB and is limited by background noise.

© 2006 Optical Society of America

OCIS Codes
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(170.3880) Medical optics and biotechnology : Medical and biological imaging
(170.4500) Medical optics and biotechnology : Optical coherence tomography

ToC Category:
Medical Optics and Biotechnology

History
Original Manuscript: October 31, 2005
Revised Manuscript: February 2, 2006
Manuscript Accepted: February 3, 2006

Virtual Issues
Vol. 1, Iss. 6 Virtual Journal for Biomedical Optics

Citation
Andrei B. Vakhtin, Kristen A. Peterson, and Daniel J. Kane, "Resolving the complex conjugate ambiguity in Fourier-domain OCT by harmonic lock-in detection of the spectral interferogram," Opt. Lett. 31, 1271-1273 (2006)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-31-9-1271


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