Absolute spherical surface metrology by differencing rotation maps.

Abstract

A simple novel method for the absolute interferometric testing of spherical surfaces is presented. This approach yields an estimate for test surface errors without changing experimental settings, such as cavity length, which may affect the apparent reference errors. The test surface is tested in three orientations: a basic position and two rotation… (More)
DOI: 10.1364/AO.54.006186

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