Extending optical filaments using auxiliary dress beams

    Authors

    M. Mills; M. Heinrich; M. Kolesik;D. Christodoulides

    Comments

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    Abbreviated Journal Title

    J. Phys. B-At. Mol. Opt. Phys.

    Keywords

    filamentation; dressed filaments; femtosecond phenomena; ultrafast; nonlinear optics; FEMTOSECOND LASER-PULSES; PLASMA CHANNELS; BESSEL BEAMS; AIR; GENERATION; PROPAGATION; AXICON; RANGE; GUIDE; Optics; Physics, Atomic, Molecular & Chemical

    Abstract

    Dressed optical filaments offer a way to greatly protract an optical filament's natural length while at the same time mitigating nonlinear losses and unwanted multifilamentation effects. In this article, we first theoretically reexamine the quasi-linear propagation dynamics of a standard Gaussian-ring wavefront and then proceed to explore several optical dress beam arrangements of equal-energy. The purpose of this study is to numerically simulate configurations which more economically utilize the finite amount of energy available for filament prolongation. In general, we find that parameters such as beam width and inward radial chirp, when adjusted in unison, play an important role in extending a filament whereas the spatial distribution of power in the optical dress only affects the characteristic intensity fluctuations seen during refocusing cycles.

    Journal Title

    Journal of Physics B-Atomic Molecular and Optical Physics

    Volume

    48

    Issue/Number

    9

    Publication Date

    1-1-2015

    Document Type

    Article

    Language

    English

    First Page

    6

    WOS Identifier

    WOS:000352741600015

    ISSN

    0953-4075

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