Spectral anomalies at wave-front dislocations

    Authors

    G. Popescu;A. Dogariu

    Comments

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    Abbreviated Journal Title

    Phys. Rev. Lett.

    Keywords

    Physics, Multidisciplinary

    Abstract

    In a recent Letter, Gbur, Visser, and Wolf [Phys. Rev. Lett. 88, 013901 (2002)] predict that remarkable spectral changes can take place in the neighborhood of phase singularities of a diffracted focused wave. We report here the experimental observation of this anomalous spectral behavior and show that this is a general characteristic of optical vortices. Using a high-resolution interferometric technique, we are able to measure directly both the spectral intensity distribution and the spectral phase at the singular points of optical waves.

    Journal Title

    Physical Review Letters

    Volume

    88

    Issue/Number

    18

    Publication Date

    1-1-2002

    Document Type

    Article

    Language

    English

    First Page

    4

    WOS Identifier

    WOS:000175192100016

    ISSN

    0031-9007

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