title: Experimental evidence of the theoretical spatial frequency response of cubic phase mask wavefront coding imaging systems.
abstract: The optical transfer function of a cubic phase mask wavefront coding imaging system is experimentally measured across the entire range of defocus values encompassing the system's functional limits. The results are compared against mathematical expressions describing the spatial frequency response of these computational imagers. Experimental data shows that the observed modulation and phase transfer functions, available spatial frequency bandwidth and design range of this imaging system strongly agree with previously published mathematical analyses. An imaging system characterization application is also presented wherein it is shown that the phase transfer function is more robust than the modulation transfer function in estimating the strength of the cubic phase mask.
authors.affiliation: Department of Electrical Engineering, Southern Methodist University, Dallas, Texas 75275-0338, USA. msomayaj@lyle.smu.edu
authors.forename: Manjunath
authors.initials: M
authors.lastname: Somayaji
authors.forename: Vikrant R
authors.initials: VR
authors.lastname: Bhakta
authors.forename: Marc P
authors.initials: MP
authors.lastname: Christensen
mesh_terms: D007091:Image Processing, Computer-Assisted / Q000295:instrumentation* / Q000379:methods* / Q000592:standards; D008027:Light; D008962:Models, Theoretical; D055095:Optics and Photonics / Q000295:instrumentation* / Q000379:methods* / Q000592:standards; D015203:Reproducibility of Results