1 May 1997 Speckle shearing interferometry using a diffractive optical beam splitter
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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.
Arnd Gundlach, Arnd Gundlach, Jonathan Mark Huntley, Jonathan Mark Huntley, Bernd Manzke, Bernd Manzke, Johannes Schwider, 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 . Submission:

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