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Optical Engineering

Speckle shearing interferometry using a diffractive optical beam splitter
Author(s): Arnd Gundlach; Jonathan Mark Huntley; Bernd Manzke; Johannes Schwider
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Paper Abstract

A novel shearing interferometer is described that uses an optimized phase grating as the shearing element. The method has a number of advantages over a conventional Michelson interferometer shearing device, including light efficiency, simplicity, and low cost. Quantitative fringe analysis is easily carried out by in-plane translation of the grating and the use of standard phase-shifting algorithms. The influence of higher diffraction orders on the noise in the measured phase distributions is discussed.

Paper Details

Date Published: 1 May 1997
PDF: 11 pages
Opt. Eng. 36(5) doi: 10.1117/1.601351
Published in: Optical Engineering Volume 36, Issue 5
Show Author Affiliations
Arnd Gundlach, Univ. of Erlangen-Nurnberg (Germany)
Jonathan Mark Huntley, Loughborough Univ. of Technology (United Kingdom)
Bernd Manzke, Univ. Erlangen-Nuernberg (Germany)
Johannes Schwider, Univ. Erlangen-Nuernberg (Germany)

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