17 June 2009 Dual-CGH interferometry test for x-ray mirror mandrels
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We describe a glancing-incidence interferometric double-pass test, based on a pair of computer-generated holograms (CGHs), for mandrels used to fabricate x-ray mirrors for space-based x-ray telescopes. The design of the test and its realization are described. The application illustrates the advantage of dual-CGH tests for the complete metrology of precise optical surfaces.
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Guangjun Gao, John P. Lehan, Ulf Griesmann, "Dual-CGH interferometry test for x-ray mirror mandrels", Proc. SPIE 7389, Optical Measurement Systems for Industrial Inspection VI, 73891B (17 June 2009); doi: 10.1117/12.830659; https://doi.org/10.1117/12.830659

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