Abstract
An approximate expression of the peak position of the point-spread function (PSF) of wavefront coding systems with a cubic phase mask (CPM) is derived and verified by simulation results. An approach called the nonaxial Strehl ratio (NASR) is used to evaluate the performance of wavefront coding systems with defocus aberrations. The characteristics of the NASR are investigated. The relationships between the NASR and the similarity of out-of-focus modulation transfer function (MTF) and recoverability of blurred encoding images are presented, and some useful guidelines are given for the optimization of phase mask parameters according to these relationships.
© 2011 Optical Society of America
Full Article | PDF ArticleMore Like This
Manjunath Somayaji, Vikrant R. Bhakta, and Marc P. Christensen
Opt. Express 20(2) 1878-1895 (2012)
Wenzi Zhang, Zi Ye, Tingyu Zhao, Yanping Chen, and Feihong Yu
Opt. Express 15(4) 1543-1552 (2007)
Xinhua Chen, Jiankang Zhou, and Weimin Shen
Opt. Express 24(18) 21070-21080 (2016)