Frontiers in Physics (Jan 2024)

Higher-resolution wavefront sensing based on sub-wavefront information extraction

  • Hongli Guan,
  • Hongli Guan,
  • Hongli Guan,
  • Hongli Guan,
  • Wang Zhao,
  • Wang Zhao,
  • Wang Zhao,
  • Shuai Wang,
  • Shuai Wang,
  • Shuai Wang,
  • Kangjian Yang,
  • Kangjian Yang,
  • Kangjian Yang,
  • Mengmeng Zhao,
  • Mengmeng Zhao,
  • Mengmeng Zhao,
  • Shenghu Liu,
  • Shenghu Liu,
  • Shenghu Liu,
  • Shenghu Liu,
  • Han Guo,
  • Han Guo,
  • Han Guo,
  • Ping Yang,
  • Ping Yang,
  • Ping Yang

DOI
https://doi.org/10.3389/fphy.2023.1336651
Journal volume & issue
Vol. 11

Abstract

Read online

The limited spatial sampling rates of conventional Shack–Hartmann wavefront sensors (SHWFSs) make them unable to sense higher-order wavefront distortion. In this study, by etching a known phase on each microlens to modulate sub-wavefront, we propose a higher-resolution wavefront reconstruction method that employs a modified modal Zernike wavefront reconstruction algorithm, in which the reconstruction matrix contains quadratic information that is extracted using a neural network. We validate this method through simulations, and the results show that once the network has been trained, for various atmospheric conditions and spatial sampling rates, the proposed method enables fast and accurate high-resolution wavefront reconstruction. Furthermore, it has highly competitive advantages such as fast dataset generation, simple network structure, and short prediction time.

Keywords