Beam breakup and modulational instability in a bulk type I quadratic medium

    Authors

    D. M. Baboiu;G. I. Stegeman

    Comments

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    Abbreviated Journal Title

    Opt. Quantum Electron.

    Keywords

    SPATIAL SOLITARY WAVES; 2ND-ORDER NONLINEARITIES; OPTICAL SOLITONS; GENERATION; STABILITY; Engineering, Electrical & Electronic; Optics

    Abstract

    The effect of a small modulation superimposed on a strip (1D) solitary wave propagating in a bulk quadratic medium was investigated both analytically and numerically near Type phase matching. General, exact results were obtained. By using first order perturbation theory, we obtained the gain coefficient for the modulational instability and the modulation cut-off frequency and we investigated their dependence on various beam and material parameters. The wave evolves into a clean periodic sequence of solitary waves and does not reproduce the incident beam. We showed that the beam breakup observed experimentally is due entirely to noise induced modulational instability.

    Journal Title

    Optical and Quantum Electronics

    Volume

    30

    Issue/Number

    7-10

    Publication Date

    1-1-1998

    Document Type

    Article

    Language

    English

    First Page

    937

    Last Page

    954

    WOS Identifier

    WOS:000078160300025

    ISSN

    0306-8919

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