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5 November 2020 Research on wavefront metrology of continuous spiral phase plate based on phase retrieval
Hao Yan, BaoJian Ji, ShengLin Wen, QiKai Shi
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Proceedings Volume 11568, AOPC 2020: Optics Ultra Precision Manufacturing and Testing; 115681T (2020) https://doi.org/10.1117/12.2580257
Event: Applied Optics and Photonics China (AOPC 2020), 2020, Beijing, China
Abstract
The fully continuous spiral phase plate (SPP) has been used more and more widely in high-power laser and other fields. Its unique jump cross section structure with a width of only a few millimeters puts forward extremely high requirements for wavefront measurement. In this paper, a defocus multi-intensity phase retrieval algorithm based on weighted GS for wavefront measurement of SPP is proposed, and the influence of phase retrieval test error on measurement accuracy is analyzed. Finally, a phase retrieval test platform is established, and the high-precision phase retrieval measurement of the SPP wavefront is realized.
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Hao Yan, BaoJian Ji, ShengLin Wen, and QiKai Shi "Research on wavefront metrology of continuous spiral phase plate based on phase retrieval", Proc. SPIE 11568, AOPC 2020: Optics Ultra Precision Manufacturing and Testing, 115681T (5 November 2020); https://doi.org/10.1117/12.2580257
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KEYWORDS
Spiral phase plates
Phase retrieval
Wavefront metrology
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