Optical arrangement coupled to a radial shear cyclic interferometer to generate simultaneously two interferograms with a phase shift of π / 2

J. F. Casco Vásquez; C. I. Robledo Sánchez; M. Ortiz Gutiérrez; L. M. Arévalo Aguilar; P. Nanco Hernandez

doi:10.1117/12.911696

14 October 2011 Optical arrangement coupled to a radial shear cyclic interferometer to generate simultaneously two interferograms with a phase shift of π/ 2

J. F. Casco Vásquez, C. I. Robledo Sánchez, M. Ortiz Gutiérrez, L. M. Arévalo Aguilar, P. Nanco Hernandez

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Proceedings Volume 8287, Eighth Symposium Optics in Industry; 82870D (2011) https://doi.org/10.1117/12.911696
Event: Eighth Symposium Optics in Industry, 2011, Toluca de Lerdo, Mexico

Abstract

A radial displacement cyclic interferometer parallel beams is used to generate phase shifts. Simultaneously engages an architecture that generates the same moment two interferograms with a phase shift of pi / 2 between them. This phase shift is obtained using optical components. Unlike the arrangements that use a grid in the Fourier plane, where the distance between interference patterns obtained are not adjustable, but is determined by the length of the grid, in the configuration presented, is sufficient to shift one of the reflecting mirrors in order to control the separation between interferograms.. A phase object is used. Interferometric arrangement is presented, and the results obtained experimentally.

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J. F. Casco Vásquez, C. I. Robledo Sánchez, M. Ortiz Gutiérrez, L. M. Arévalo Aguilar, and P. Nanco Hernandez "Optical arrangement coupled to a radial shear cyclic interferometer to generate simultaneously two interferograms with a phase shift of π/ 2", Proc. SPIE 8287, Eighth Symposium Optics in Industry, 82870D (14 October 2011); https://doi.org/10.1117/12.911696

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KEYWORDS

Phase shifts

Interferometers

Mirrors

Beam splitters

Phase interferometry

Phase shifting

Shearing interferometers

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