Testing of null correctors by tilted computer-generated holograms with maximum likelihood algorithm

Deyan Zhu

doi:10.1117/12.2295528

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15 November 2017 Testing of null correctors by tilted computer-generated holograms with maximum likelihood algorithm

Deyan Zhu

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Proceedings Volume 10605, LIDAR Imaging Detection and Target Recognition 2017; 1060539 (2017) https://doi.org/10.1117/12.2295528
Event: LIDAR Imaging Detection and Target Recognition 2017, 2017, Changchun, China

Abstract

Aspheric mirrors are often tested by interferometer with two different ways ensuring the correctness of the testing result. As the two most common methods, null correctors and CGHs are often used in actual testing at the same time. Considering the accuracy of CGH is higher than null lens, it can be also used to calibrate the accuracy of null lens. However, the central section of null correctors can’t be tested by traditional CGHs. In the article, tilted CGHs are proposed to test null correctors. In addition, we provided an experimental demonstration by testing a null corrector with tilted CGH applying the maximum likelihood (ML) algorithm. The result demonstrates the feasibility of the testing of null correctors by tilted CGHs with ML algorithm.

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Deyan Zhu "Testing of null correctors by tilted computer-generated holograms with maximum likelihood algorithm", Proc. SPIE 10605, LIDAR Imaging Detection and Target Recognition 2017, 1060539 (15 November 2017); https://doi.org/10.1117/12.2295528

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