Open AccessExtension of the modal wave-front reconstruction algorithm to non-uniform illumination
Author(s) -
Xiaoyu Ma,
Jie Mu,
Changhui Rao,
Jinsheng Yang,
Xuejun Rao,
Yu Tian
Publication year - 2014
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.22.015589
Subject(s) - wavefront , optics , modal , front (military) , physics , aperture (computer memory) , acoustics , materials science , meteorology , polymer chemistry
Attempts are made to eliminate the effects of non-uniform illumination on the precision of wave-front measurement. To achieve this, the relationship between the wave-front slope at a single sub-aperture and the distributions of the phase and light intensity of the wave-front were first analyzed to obtain the relevant theoretical formulae. Then, based on the principle of modal wave-front reconstruction, the influence of the light intensity distribution on the wave-front slope is introduced into the calculation of the reconstruction matrix. Experiments were conducted to prove that the corrected modal wave-front reconstruction algorithm improved the accuracy of wave-front reconstruction. Moreover, the correction is conducive to high-precision wave-front measurement using a Hartmann wave-front sensor in the presence of non-uniform illumination.