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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 13, Iss. 22 — Oct. 31, 2005
  • pp: 9125–9130

Low-coherence interference microscopy with an improved switchable achromatic phase-shifter

Maitreyee Roy, Guy Cox, and Parameswaran Hariharan  »View Author Affiliations

Optics Express, Vol. 13, Issue 22, pp. 9125-9130 (2005)

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We present results obtained with a computer-controlled low-coherence interference microscope featuring a modified optical layout that uses a pair of fast switchable achromatic phase-shifters. This layout makes it possible to use ferro-electric liquid-crystal devices made with readily available FLC materials having a switching angle of 45°, and obtain phase shifts of 0° and ±90°. The use of phase shifts of 0° and ±90° simplifies calculations of the fringe visibility and the fractional fringe-order and yields maximum accuracy.

© 2005 Optical Society of America

OCIS Codes
(110.4500) Imaging systems : Optical coherence tomography
(110.6880) Imaging systems : Three-dimensional image acquisition
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(170.1650) Medical optics and biotechnology : Coherence imaging
(180.3170) Microscopy : Interference microscopy
(180.6900) Microscopy : Three-dimensional microscopy

ToC Category:
Research Papers

Original Manuscript: September 22, 2005
Revised Manuscript: October 25, 2005
Published: October 31, 2005

Maitreyee Roy, Guy Cox, and Parameswaran Hariharan, "Low-coherence interference microscopy with an improved switchable achromatic phase-shifter," Opt. Express 13, 9125-9130 (2005)

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