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Light-matter interaction induces a shadow vortex

R. Barboza, U. Bortolozzo, M. G. Clerc, J. D. Davila, M. Kowalczyk, S. Residori, and E. Vidal-Henriquez
Phys. Rev. E 93, 050201(R) – Published 16 May 2016

Abstract

By sending a light beam on a homeotropic nematic liquid-crystal cell subjected to a voltage with a photosensitive wall, a stable matter vortex can be induced at the center of the beam. When the applied voltage is decreased, the vortex disappears from the illuminated region; however, the system shows a stationary molecular texture. Based on a forced Ginzburg-Landau amplitude equation, we show that the vortex with a core of exponentially suppressed amplitude always remains in a shadow region below instability threshold and that the observed texture is induced by its phase distribution. This is a different type of vortex phase singularity solution. Numerical simulations and experimental observations show a quite fair agreement.

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  • Received 15 February 2016

DOI:https://doi.org/10.1103/PhysRevE.93.050201

©2016 American Physical Society

Physics Subject Headings (PhySH)

Polymers & Soft MatterAtomic, Molecular & Optical

Authors & Affiliations

R. Barboza1, U. Bortolozzo2, M. G. Clerc1, J. D. Davila3, M. Kowalczyk3, S. Residori2, and E. Vidal-Henriquez4

  • 1Departamento de Física, FCFM, Universidad de Chile, Casilla 487-3, Santiago, Chile
  • 2Institut Non Linéaire de Nice, Université de Nice-Sophia Antipolis, CNRS, 1361 Route des Lucioles, 06560 Valbonne, France
  • 3Departamento de Ingeniería Matemática and Centro de Modelamiento Matemático (UMI 2807 CNRS), FCFM, Universidad de Chile, Casilla 170 Correo 3, Santiago, Chile
  • 4Max Planck Institute for Dynamics and Self-Organization, Am Fassberg 17, D-37077 Göttingen, Germany

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Issue

Vol. 93, Iss. 5 — May 2016

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