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...
Main Authors: | , , , , , |
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Format: | Article |
Language: | English |
Published: |
AIP Publishing LLC
2021-07-01
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Series: | Matter and Radiation at Extremes |
Online Access: | http://dx.doi.org/10.1063/5.0050961 |
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. |
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ISSN: | 2468-080X |