Speckle shearing interferometry using a diffractive optical beam splitter

Arnd Gundlach; Jonathan Mark Huntley; Bernd Manzke; Johannes Schwider

doi:10.1117/1.601351

1 May 1997 Speckle shearing interferometry using a diffractive optical beam splitter

Arnd Gundlach, Jonathan Mark Huntley, Bernd Manzke, Johannes Schwider

Optical Engineering, Vol. 36, Issue 5, (May 1997). https://doi.org/10.1117/1.601351

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.

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Arnd Gundlach, Jonathan Mark Huntley, Bernd Manzke, and Johannes Schwider "Speckle shearing interferometry using a diffractive optical beam splitter," Optical Engineering 36(5), (1 May 1997). https://doi.org/10.1117/1.601351

Published: 1 May 1997

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