Angular and radial mode analyzer for optical beams

    Authors

    A. F. Abouraddy; T. M. Yarnall;B. E. A. Saleh

    Comments

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    Abbreviated Journal Title

    Opt. Lett.

    Keywords

    MOMENTUM; TRANSFORMS; Optics

    Abstract

    We describe an approach to determining both the angular and the radial modal content of a scalar optical beam in terms of optical angular momentum modes. A modified Mach-Zehnder interferometer that incorporates a spatial rotator to determine the angular modes and an optical realization of the fractional Hankel transform (fHT) to determine the radial modes is analyzed. Varying the rotation angle and the order of the fHT produces a two-dimensional (2D) interferogram from which we extract the modal coefficients by simple 2D Fourier analysis. (C) 2011 Optical Society of America

    Journal Title

    Optics Letters

    Volume

    36

    Issue/Number

    23

    Publication Date

    1-1-2011

    Document Type

    Article

    Language

    English

    First Page

    4683

    Last Page

    4685

    WOS Identifier

    WOS:000298174400073

    ISSN

    0146-9592

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