Open AccessPoint spread function characteristics analysis of the wavefront coding system
Author(s) -
Wenzi Zhang,
Zi Ye,
Ting Zhao,
Yanping Chen,
Feihong Yu
Publication year - 2007
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.15.001543
Subject(s) - optics , point spread function , wavefront , fast fourier transform , coma (optics) , spatial frequency , fourier transform , frequency domain , optical transfer function , physics , astigmatism , fourier optics , spatial light modulator , computer science , algorithm , computer vision , quantum mechanics
Most of the previous imaging characteristics analysis of the wavefront coding system has been carried out within the frequency domain. In this paper, the stationary phase method is employed to perform the analysis within the spatial domain. The approximate expression of point spread function (PSF) in the presence of defocus aberration is derived for the system with a cubic phase mask, which shows a good agreement with the Fast Fourier Transform (FFT) approach. Based on this, the PSF characteristics are analyzed in terms of the boundaries, oscillations and sensitivities to defocus, astigmatism and coma.