title: Extension of the modal wave-front reconstruction algorithm to non-uniform illumination.
abstract: 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.
authors: Xiaoyu
authors: X
authors: Ma
authors: Jie
authors: J
authors: Mu
authors: ChangHui
authors: C
authors: Rao
authors: Jinsheng
authors: J
authors: Yang
authors: XueJun
authors: X
authors: Rao
authors: Yu
authors: Y
authors: Tian