Open AccessAlgorithm and experiment of whole-aperture wavefront reconstruction from annular subaperture Hartmann–Shack gradient data
Author(s) -
Hongyan Xu,
Hao Xian,
Yudong Zhang
Publication year - 2010
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.18.013431
Subject(s) - zernike polynomials , wavefront , optics , tilt (camera) , wavefront sensor , aperture (computer memory) , adaptive optics , computer science , reconstruction algorithm , detector , sensitivity (control systems) , physics , iterative reconstruction , computer vision , mathematics , geometry , acoustics , electronic engineering , engineering
A new method is proposed for testing a rotationally symmetric aspheric surface with several annular subapertures based on a Hartmann-Shack sensor. In consideration of the limited sampling of Hartmann-Shack subapertures in the matching annular subaperture, a new algorithm for whole-aperture wavefront reconstruction from annular subaperture Hartmann-Shack gradient data is established. The algorithm separates the tip, tilt, and defocus misalignments for each annular subaperture by introducing annular Zernike polynomials. The performance of the algorithm is evaluated for different annular subaperture configurations, and the sensitivity of the algorithm to the detector error of the wavefront gradient is analyzed. The algorithm is verified by the experimental results.