Dynamic light scattering in localized coherence volumes

    Authors

    G. Popescu;A. Dogariu

    Abbreviated Journal Title

    Opt. Lett.

    Keywords

    DIFFUSING-WAVE SPECTROSCOPY; RANDOM-MEDIA; TRANSITION; Optics

    Abstract

    We introduce a novel light-scattering technique for investigating the dynamics of random media with a broad range of optical densities. By use of the spatial coherence properties of a single-mode optical fiber and the temporal coherence of a broadband source, the measurement volume is isolated at the end of the optical waveguide. Optical mixing between the fluctuating scattered light and the Fresnel-reflected field at the fiber-medium interface is analyzed directly in the frequency domain. The unique characteristics of this new technique are discussed in the context of simultaneous measurement of average scatterer size and concentration in dense colloidal suspensions. (C) 2001 Optical Society of America.

    Journal Title

    Optics Letters

    Volume

    26

    Issue/Number

    8

    Publication Date

    1-1-2001

    Document Type

    Article

    Language

    English

    First Page

    551

    Last Page

    553

    WOS Identifier

    WOS:000168222500026

    ISSN

    0146-9592

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