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Related Experiment Videos

Self-propelled cavity solitons in semiconductor microcavities.

A J Scroggie1, J M McSloy, W J Firth

  • 1Department of Physics and Applied Physics, University of Strathclyde, 107 Rottenrow, Glasgow G4 ONG, Scotland, UK. andrew@phys.strath.ac.uk

Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics
|October 9, 2002
PubMed
Summary

Researchers show that bright and dark spatial solitons can spontaneously move in semiconductor microcavities due to temperature changes. This instability leads to novel soliton dynamics and interactions.

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Area of Science:

  • Nonlinear optics
  • Condensed matter physics
  • Semiconductor device physics

Background:

  • Spatial solitons are localized light beams that maintain their shape.
  • Semiconductor microcavities confine light and exhibit unique optical properties.
  • Stationary solitons can become unstable under certain conditions, leading to motion.

Purpose of the Study:

  • To demonstrate the existence of spontaneously moving spatial solitons in a semiconductor microcavity model.
  • To investigate the mechanism causing soliton motion.
  • To analyze the behavior of moving solitons under parameter modulations and their interactions.

Main Methods:

  • Development of a theoretical model for a semiconductor microcavity.
  • Analysis of stationary soliton solutions and their stability.

Related Experiment Videos

  • Derivation of an order parameter equation for moving solitons.
  • Numerical demonstration of two-dimensional (2D) moving solitons and their interactions.

    • Main Results:

    • Existence of both bright and dark spontaneously moving spatial solitons confirmed.
    • Soliton motion originates from an instability of stationary solutions due to temperature-induced cavity detuning.
    • An order parameter equation accurately describes the behavior of moving solitons.
    • Demonstration of 2D moving solitons and their interaction dynamics.

    Conclusions:

    • Temperature-induced instabilities provide a mechanism for spontaneous soliton motion in semiconductor microcavities.
    • The derived order parameter equation offers a framework for understanding and predicting moving soliton behavior.
    • The study confirms the existence and interaction of 2D moving solitons, opening avenues for novel optical device applications.