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Appl Opt. 1993 Nov 1;32(31):6242-9. doi: 10.1364/AO.32.006242.

Three-wave lateral shearing interferometer.

Abstract

The three-wave lateral shearing interferometer is an interferometer specially designed for optical testing. It determines three noncollinear phase gradients from one single-fringe pattern. From these quantities, two orthogonal derivatives and the measurement error are estimated, allowing the reconstruction of the aberrated wave front. This new interferometer has several benefits; among them is that its sensitivity and dynamics can be easily adjusted to the analyzed aberrations.

PMID:
20856456
[PubMed]
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