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Optical Engineering

Polarization-sensitive scanned fiber confocal microscope
Author(s): Poul Michael F. Nielsen; Fred N. Reinholz; Paul G. Charette
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Paper Abstract

We describe a polarization-sensitive fiber optic based confocal microscope. Polarization maintaining single mode fibers are used to illuminate a specimen with linearly polarized light. The orientation of the incident linearly polarized light is continuously variable using a Se´narmont polarization rotator. A polarization-sensitive light detector enables the microscope to record the intensity and polarization orientation of the reflected light. The microscope can thus function as a conventional confocal microscope as well as detect rotations of the polarization orientation of the incident light by a birefringent specimen. Lateral scanning of the microscope focal volume is achieved by moving the fiber tip in a reciprocal layout. Confocal operation of the system is demonstrated both theoretically and experimentally. The theoretical and measured responses of the microscope to a dielectric mirror, glass slide, quarter wave plate, linear polarizer, and calcite crystal are considered. Images of a birefringent specimen are presented.

Paper Details

Date Published: 1 November 1996
PDF: 8 pages
Opt. Eng. 35(11) doi: 10.1117/1.601046
Published in: Optical Engineering Volume 35, Issue 11
Show Author Affiliations
Poul Michael F. Nielsen, Univ. of Aukland (New Zealand)
Fred N. Reinholz, Univ. of Rostock (Australia)
Paul G. Charette, McGill Univ. (United States)

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