title: Superresolution along extended depth of focus with binary-phase filters for the Gaussian beam.
abstract: In the paraxial Debye regime, simple and power-efficient pupil filters are designed to break the diffraction limit along a large depth of focus (DOF) for the Gaussian beam. Dependences of the superresolution factor, DOF gain, Strehl ratio, sidelobe strength, and axial intensity nonuniformity on the Gaussian profile in the pupil plane are characterized using the numerical method. Optimal filter designs are proposed for either high-resolution or ultra-large-DOF applications followed by experimental verifications.
authors.affiliation: Graduate Programme in Bioengineering, National University of Singapore, Singapore.
authors.forename: Linbo
authors.initials: L
authors.lastname: Liu
authors.forename: Frédéric
authors.initials: F
authors.lastname: Diaz
authors.forename: Liang
authors.initials: L
authors.lastname: Wang
authors.forename: Brigitte
authors.initials: B
authors.lastname: Loiseaux
authors.forename: Jean-Pierre
authors.initials: JP
authors.lastname: Huignard
authors.forename: C J R
authors.initials: CJ
authors.lastname: Sheppard
authors.forename: Nanguang
authors.initials: N
authors.lastname: Chen
mesh_terms: D016477:Artifacts; D008027:Light; D015233:Models, Statistical; D008962:Models, Theoretical; D016011:Normal Distribution; D009716:Numerical Analysis, Computer-Assisted; D055095:Optics and Photonics; D010363:Pattern Recognition, Automated; D012031:Refractometry