Beam wavefront retrieval by convoluted spatial spectral benchmark
Open Access
- 8 June 2021
- journal article
- research article
- Published by AIP Publishing in Matter and Radiation at Extremes
- Vol. 6 (4), 045902
- https://doi.org/10.1063/5.0050961
Abstract
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.Keywords
Funding Information
- National Natural Science Foundation of China (61805223, 61775199)
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