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Opt Express. 2006 Jul 24;14(15):6788-93.

White-light interference microscopy: a way to obtain high lateral resolution over an extended range of heights.

Abstract

A problem with conventional techniques of interference microscopy, when profiling surfaces with an extended range of heights, is that only points on a single plane are in sharp focus. Other points, which are higher or lower, may be out of focus, with a consequent loss of lateral resolution. We show that white-light interference microscopy, with an achromatic phase-shifter, makes it possible to produce a three-dimensional representation of such surfaces with high lateral resolution over the entire range of heights.

PMID:
19516860
[PubMed]
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