Axial field shaping under high-numerical-aperture focusing

    Authors

    T. G. Jabbour;S. M. Kuebler

    Comments

    Authors: contact us about adding a copy of your work at STARS@ucf.edu

    Abbreviated Journal Title

    Opt. Lett.

    Keywords

    2-PHOTON SCANNING MICROSCOPY; GENERALIZED PROJECTIONS; VECTOR; DIFFRACTION; SUPERRESOLUTION; FILTERS; HOLOGRAMS; ELEMENTS; DESIGN; BEAMS; Optics

    Abstract

    Kant reported [J. Mod. Optics 47, 905 (2000)] a formulation for solving the inverse problem of vector diffraction, which accurately models high-NA focusing. Here, Kant's formulation is adapted to the method of generalized projections to obtain an algorithm for designing diffractive optical elements (DOEs) that reshape the axial point-spread function (PSF). The algorithm is applied to design a binary phase-only DOE that superresolves the axial PSF with controlled increase in axial sidelobes. An 11-zone DOE is identified that axially narrows the PSF central lobe by 29% while maintaining the sidelobe intensity at or below 52% of the peak intensity. This DOE could improve the resolution achievable in several applications without significantly complicating the optical system. (c) 2007 Optical Society of America.

    Journal Title

    Optics Letters

    Volume

    32

    Issue/Number

    5

    Publication Date

    1-1-2007

    Document Type

    Article

    Language

    English

    First Page

    527

    Last Page

    529

    WOS Identifier

    WOS:000248936600029

    ISSN

    0146-9592

    Share

    COinS