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10 November 2003 Compact reversal rotationally shearing interferometer
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Abstract
A compact, aberration-selective, reversal interferometer with variable rotational shearing of wave front is described. It is constructed with only two beam-splitter cubes, each one with one face aluminized, cemented together, and mounted in a rotary holder. This interferometer is quite insensitive to vibrations, because the wave fronts pass only through the cemented cubes to generate the interference pattern. All the rotationally symmetric aberrations are removed and the asymmetrical ones can be selectively isolated with an appropriate rotation of the cubes. The variable shearing angle is shown to control the sensitivity for detection of rotationally asymmetric aberrations like coma and tilt.
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Ivan Moreno, Gonzalo Paez, and Marija Strojnik "Compact reversal rotationally shearing interferometer", Proc. SPIE 5152, Infrared Spaceborne Remote Sensing XI, (10 November 2003); https://doi.org/10.1117/12.502125
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