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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 8 — Apr. 11, 2011
  • pp: 7161–7175

Improving the efficiency of optical coherence tomography by using the non-ideal behaviour of a polarising beam splitter

Norman Lippok, Poul Nielsen, and Frédérique Vanholsbeeck  »View Author Affiliations


Optics Express, Vol. 19, Issue 8, pp. 7161-7175 (2011)
http://dx.doi.org/10.1364/OE.19.007161


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Abstract

We present a new way of improving the efficiency of optical coherence tomography by using the polarisation crosstalk of a polarising beam splitter to direct most of the available source optical power to the sample. The use of a quarter wave plate in both the reference and the sample arms allows most of the sample power to be directed to the detector while adjusting the reference arm to ensure noise optimised operation. As a result, the sensitivity of such a system can be improved by 6 dB, or alternatively the acquisition time can be improved by a factor of 4 for shot noise limited performance, compared to a traditional OCT configuration using a 50/50 beam splitter.

© 2011 Optical Society of America

OCIS Codes
(110.4500) Imaging systems : Optical coherence tomography
(170.3890) Medical optics and biotechnology : Medical optics instrumentation
(230.1360) Optical devices : Beam splitters

ToC Category:
Imaging Systems

History
Original Manuscript: December 14, 2010
Revised Manuscript: January 25, 2011
Manuscript Accepted: February 10, 2011
Published: March 30, 2011

Virtual Issues
Vol. 6, Iss. 5 Virtual Journal for Biomedical Optics

Citation
Norman Lippok, Poul Nielsen, and Frédérique Vanholsbeeck, "Improving the efficiency of optical coherence tomography by using the non-ideal behaviour of a polarising beam splitter," Opt. Express 19, 7161-7175 (2011)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-19-8-7161


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