Ultrafast transverse undulation of self-trapped laser beams | Zendy

S.-P. Gorza | Zendy; Marc Haelterman | Zendy

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Ultrafast transverse undulation of self-trapped laser beams

Author(s) -

S.-P. Gorza,

Marc Haelterman

Publication year - 2008

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.16.016935

Subject(s) - physics , optics , ultrashort pulse , instability , soliton , self phase modulation , dispersion (optics) , nonlinear schrödinger equation , transverse plane , self focusing , beam (structure) , planar , laser , nonlinear system , nonlinear optics , laser beams , quantum mechanics , computer graphics (images) , structural engineering , computer science , engineering

The propagation of a self-trapped laser beam in a planar waveguide that exhibits a Kerr nonlinearity and a normal chromatic dispersion is considered. We demonstrate experimentally for the first time to our knowledge that such a beam undergoes an undulation responsible for ultrafast transverse oscillations of its axis. This phenomenon, called ???snake instability???, was predicted theoretically in 1973 by Zakharov and Rubenchik on the basis of a study of the soliton solutions of the hyperbolic nonlinear Schr odinger equation. The signature of this instability is observed in the spatially resolved temporal spectrum.

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