title: Image artifacts in hybrid imaging systems with a cubic phase mask.
abstract: We present the first analytical analysis of image artifacts in defocused hybrid imaging systems that employ a cubic phase-modulation function. We show that defocus artifacts have the form of image replications and are caused by a net phase modulation of the optical transfer function. Both numerical simulations and experimental images are presented that exhibit replication artifacts that are compatible with the analytical expressions.
authors.affiliation: Heriot Watt University, Imaging Concepts Group, School of Engineering and Physical Sciences, Edinburgh, EH14 4AS, Scotland, UK.
authors.forename: Mads
authors.initials: M
authors.lastname: Demenikov
authors.forename: Andrew R
authors.initials: AR
authors.lastname: Harvey