Large phase shifts due to the chi((2)) cascading nonlinearity in large walk-off and loss regimes in semiconductors and other dispersive materials

    Authors

    Y. Ueno; G. I. Stegeman;K. Tajima

    Comments

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    Abbreviated Journal Title

    Jpn. J. Appl. Phys. Part 2 - Lett.

    Keywords

    cascading nonlinearity; nonlinear phase shift; temporal walk-off; dispersion; semiconductor; KTP; DEVICES; Physics, Applied

    Abstract

    The nonlinear phase shift associated with chi((2)) cascading was studied for ultrashort pulses in regimes with large temporal walk-offs between the fundamental and the chi((2))-generated second-harmonic (SH) pulses, a situation typical of semiconductors. Despite the small overlap between the fundamental and SH pulses after they walk-off each other: a nonlinear phase shift was numerically observed to occur at a rate comparable to that before they walk-off. A pi/2 phase shift was demonstrated even in a waveguide 15 times longer than the walk-off length.

    Journal Title

    Japanese Journal of Applied Physics Part 2-Letters

    Volume

    36

    Issue/Number

    5B

    Publication Date

    1-1-1997

    Document Type

    Article

    Language

    English

    First Page

    L613

    Last Page

    L615

    WOS Identifier

    WOS:A1997XC49000008

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