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...

Full description

Bibliographic Details
Main Authors: Xuewei Deng, Xiaoxia Huang, Deen Wang, Ying Yang, Xin Zhang, Dongxia Hu
Format: Article
Language:English
Published: AIP Publishing LLC 2021-07-01
Series:Matter and Radiation at Extremes
Online Access:http://dx.doi.org/10.1063/5.0050961
Description
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:2468-080X