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Proceedings Paper

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

A low-coherence Linnik interference microscope using high numerical aperture optics has been constructed. The system uses a tungsten halogen lamp and a Koehler illumination, with separate control over field and aperture stops, so that experiments can be conducted with a range of different geometric phase which is achieved by using a polarizing beam splitter, a quarter wave plate and a rotating polarizer. Image information is extracted from the visibility of the fringes, and the position of the visibility peak along the scanning axis, yielding the height of the test surface at the corresponding points.

Paper Details

Date Published: 25 September 2001
PDF: 4 pages
Proc. SPIE 4417, Photonics 2000: International Conference on Fiber Optics and Photonics, (25 September 2001); doi: 10.1117/12.441347
Show Author Affiliations
Maitreyee Roy, Univ. of Sydney (Australia)
Peter Svahn, Royal Institute of Technology (Australia)
Colin J. R. Sheppard, Univ. of Sydney (Australia)

Published in SPIE Proceedings Vol. 4417:
Photonics 2000: International Conference on Fiber Optics and Photonics
S. K. Lahiri; Ranjan Gangopadhyay; Asit K. Datta; Samit K. Ray; B. K. Mathur; S. Das, Editor(s)

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