Geometric phase low-coherence interference microscopy at high numerical apertures

Maitreyee Roy; Peter Svahn; Colin J. R. Sheppard

doi:10.1117/12.441347

25 September 2001 Geometric phase low-coherence interference microscopy at high numerical apertures

Maitreyee Roy, Peter Svahn, Colin J. R. Sheppard

Proceedings Volume 4417, Photonics 2000: International Conference on Fiber Optics and Photonics; (2001) https://doi.org/10.1117/12.441347
Event: Photonics 2000: International Conference on Fiber Optics and Photonics, 2001, Calcutta, India

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.

Citation Download Citation

Maitreyee Roy, Peter Svahn, and Colin J. R. Sheppard "Geometric phase low-coherence interference microscopy at high numerical apertures", Proc. SPIE 4417, Photonics 2000: International Conference on Fiber Optics and Photonics, (25 September 2001); https://doi.org/10.1117/12.441347

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