Point spread function characteristics analysis of the wavefront coding system
Journal
Optics Express
Journal Volume
15
Journal Issue
4
Pages
1543-1552
Date Issued
2007
Author(s)
Abstract
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.
Type
journal article