Beam wavefront retrieval by convoluted spatial spectral benchmark

We propose a method for retrieving a beam wavefront from its near-field intensity distribution after a 4f system by simply inserting a benchmark at the Fourier plane. Through a convolution of the mark-blocked spatial frequency component and the original optical field with the 4f system, the separati...

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Bibliographic Details
Published inMatter and radiation at extremes Vol. 6; no. 4; pp. 045902 - 045902-7
Main Authors Deng, Xuewei, Huang, Xiaoxia, Wang, Deen, Yang, Ying, Zhang, Xin, Hu, Dongxia
Format Journal Article
LanguageEnglish
Published AIP Publishing LLC 01.07.2021
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Summary:We propose a method for retrieving a beam wavefront from its near-field intensity distribution after a 4f system by simply inserting a benchmark at the Fourier plane. Through a convolution of the mark-blocked spatial frequency component and the original optical field with the 4f system, the separation between the focus of any sub-aperture and the benchmark can be determined to reconstruct the beam wavefront. Theoretical and experimental studies demonstrate the validity of this method, which has potential applications in real-time wavefront sensing.
ISSN:2468-2047
2468-080X
2468-080X
DOI:10.1063/5.0050961