Nonlinear dynamics of optical absorption of intense beams

D. Corbett, C.L. Oosten, van, M. Warner

    Research output: Contribution to journalArticleAcademicpeer-review

    43 Citations (Scopus)
    165 Downloads (Pure)

    Abstract

    On traversing materials with absorbing dyes, weak optical beams decay exponentially (a Beer profile), while intense beams develop in time a profile that is spatially linear until at great depth it becomes spatially exponential. This anomalous, deep penetration, due to photobleaching of surface layers, is important for heavy dye loading and intense beams, for instance in photo-actuation. We address the problem of the evolution in time from initial Beer's Law to a finally deeply-penetrating optical profile in dyes. Our largely analytic solution of the coupled, nonlinear, partial differential equations governing the spatiotemporal decay of the Poynting flux and the nonlinear population dynamics of the photo-active molecules under intense irradiation has application to optomechanical devices.
    Original languageEnglish
    Article number013823
    Pages (from-to)013823-1/4
    Number of pages4
    JournalPhysical Review A : Atomic, Molecular and Optical Physics
    Volume78
    Issue number1
    DOIs
    Publication statusPublished - 2008

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