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Proceedings Paper

Low-coherence interference microscopy at high numerical apertures
Author(s): Colin J. R. Sheppard; Maitreyee Roy; Peter Svahn
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Paper Abstract

A white-light Linnik interference microscope using high numerical aperture optics has been constructed. The system uses a tungsten halogen source and Kohler illumination with separate control over field and aperture stops, so that experiments can be conducted with a range of different operating conditions. Infinity tube length objectives are used in the two arms. Images are recorded with a CCD camera. Different algorithms have been investigated for extraction of information from the image data. These are basd on phase stepping, which is achieved based on the principle of the geometric phase, using a polarizing beam splitter, a quarter wave plate and a rotating polarizer. Image information extracted from the visibility of the fringes and also from the phase of the interference fringes has been investigated.

Paper Details

Date Published: 4 July 2000
PDF: 4 pages
Proc. SPIE 4082, Optical Sensing, Imaging, and Manipulation for Biological and Biomedical Applications, (4 July 2000); doi: 10.1117/12.390567
Show Author Affiliations
Colin J. R. Sheppard, Univ. of Sydney (Australia)
Maitreyee Roy, Univ. of Sydney (Australia)
Peter Svahn, Univ. of Sydney and Royal Institute of Technology (Australia)

Published in SPIE Proceedings Vol. 4082:
Optical Sensing, Imaging, and Manipulation for Biological and Biomedical Applications
Robert R. Alfano; Peng Pei Ho; Arthur E. T. Chiou, Editor(s)

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