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Temperature control of nematicon trajectories.

Gaetano Assanto1, Cassandra Khan2, Armando Piccardi1

  • 1Nonlinear Optics and OptoElectronics Lab University of Rome "Roma Tre," Via della Vasca Navale 84, 00146 Rome, Italy.

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|January 23, 2020
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Summary
This summary is machine-generated.

We present a simple model for nematic liquid crystals, explaining how light beams route spatial optical solitary waves (nematicons) by combining thermal and reorientational effects. This model accurately predicts nematicon trajectories and angular steering with temperature changes.

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Area of Science:

  • Nonlinear optics
  • Liquid crystal physics
  • Theoretical physics

Background:

  • Nematic liquid crystals exhibit complex responses to light.
  • Spatial optical solitary waves, or nematicons, are key phenomena in nonlinear optics.
  • Understanding the interplay of thermal and reorientational effects is crucial for controlling light propagation.

Purpose of the Study:

  • To develop a simplified model for nematic liquid crystals.
  • To describe the synergistic thermo-optical and reorientational responses to light beams.
  • To predict the routing and angular steering of nematicons.

Main Methods:

  • Utilized modulation theory for a (2+1)-dimensional model.
  • Introduced approximations based on nonlocal material physics.
  • Accounted for energy exchange via one-photon absorption.

Main Results:

  • Successfully predicted nematicon trajectories.
  • Demonstrated angular steering of nematicons with temperature.
  • Theoretical predictions showed excellent agreement with experimental data.

Conclusions:

  • The developed model effectively describes nematicon routing in nematic liquid crystals.
  • The synergy between thermo-optical and reorientational effects is key to nematicon steering.
  • The model provides a valuable tool for understanding and controlling light propagation in such media.