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arXiv · 1501.07903

Laser beam self-symmetrization in air in the multifilamentation regime

Carles Milian·Vytautas Jukna·Arnaud Couairon·Aurelien Houard·Benjamin Forestier·Jerome Carbonnel·Yi Liu·Bernard Prade·Andre Mysyrowicz
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Abstract

We show experimental and numerical evidence of spontaneous self-symmetrization of focused laser beams experiencing multi-filamentation in air. The symmetrization effect is observed as the multiple filaments generated prior to focus approach the focal volume. This phenomenon is attributed to the nonlinear interactions amongst the different parts of the beam mediated by the optical Kerr effect, which leads to a symmetric redistribution of the wave vectors even when the beam consists of a bundle of many filaments.

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Carles Milian, Vytautas Jukna, Arnaud Couairon, Aurelien Houard, Benjamin Forestier, Jerome Carbonnel, Yi Liu, Bernard Prade, Andre Mysyrowicz. 2015-01-30. Laser beam self-symmetrization in air in the multifilamentation regime. https://doi.org/10.1088/0953-4075%2F48%2F9%2F094013

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