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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 51, Iss. 9 — Mar. 20, 2012
  • pp: 1361–1366

Full-field optical coherence tomography using nematic liquid-crystal phase shifter

Sheng-Hua Lu, Chien-Yell Wang, Cho-Yen Hsieh, Kuan-Yu Chiu, and Hui-Yu Chen  »View Author Affiliations


Applied Optics, Vol. 51, Issue 9, pp. 1361-1366 (2012)
http://dx.doi.org/10.1364/AO.51.001361


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Abstract

We present a polarization Linnik interference microscope with a nematic liquid-crystal (NLC) phase shifter for full-field optical coherence tomography of high-quality images. The rotating half-wave plate in conventional achromatic phase shifters was replaced by three liquid-crystal (LC) half-wave plates for implementing three-step phase-shifting interferometry. Thus, the NLC device generates phase shifts quickly and has no vibrations. In addition, the phase shift can be set to an arbitrary value between 0 and 2π by altering the azimuth angles of the LC cells. A tomographic image is retrieved from three sequential phase-shifted interferograms by using a three-step algorithm. The experimental results confirm the feasibility of the proposed technology.

© 2012 Optical Society of America

OCIS Codes
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(170.4500) Medical optics and biotechnology : Optical coherence tomography
(180.3170) Microscopy : Interference microscopy

ToC Category:
Medical Optics and Biotechnology

History
Original Manuscript: November 1, 2011
Revised Manuscript: December 14, 2011
Manuscript Accepted: December 17, 2011
Published: March 22, 2012

Virtual Issues
Vol. 7, Iss. 5 Virtual Journal for Biomedical Optics

Citation
Sheng-Hua Lu, Chien-Yell Wang, Cho-Yen Hsieh, Kuan-Yu Chiu, and Hui-Yu Chen, "Full-field optical coherence tomography using nematic liquid-crystal phase shifter," Appl. Opt. 51, 1361-1366 (2012)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-51-9-1361


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