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Rotation-managed dissipative solitons.

Yaroslav V Kartashov1, Lluis Torner

  • 1ICFO-Institut de Ciencies Fotoniques and Universitat Politecnica de Catalunya, Castelldefels (Barcelona) 08860, Spain. Yaroslav.Kartashov@icfo.eu

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Moving localized gain reduces effective gain for light beams. Exceeding rotation or oscillation thresholds causes unstable solitons and beam decay, impacting optical systems.

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Area of Science:

  • Nonlinear optics
  • Photonics
  • Wave propagation

Background:

  • Spatially localized gain landscapes are crucial for managing light beams.
  • Understanding the dynamics of gain in optical systems is essential for controlling light propagation.

Purpose of the Study:

  • To investigate the effect of accelerated motion (rotation/oscillation) of localized gain on light beams.
  • To determine the conditions under which dynamically oscillating gain-managed solitons can exist and remain stable.

Main Methods:

  • Theoretical analysis of light beam propagation in a medium with moving localized gain.
  • Numerical simulations to observe the behavior of solitons under various gain motion parameters.

Main Results:

  • Accelerated motion of localized gain significantly reduces the effective gain experienced by light beams.
  • Increased oscillation amplitude or rotation frequency of the gain leads to reduced effective gain.
  • Dynamically oscillating gain-managed solitons can be supported under specific conditions with background losses and nonlinearity.

Conclusions:

  • The stability of gain-managed solitons is highly sensitive to the motion parameters of the localized gain.
  • Exceeding critical thresholds for gain motion amplitude or frequency leads to the disappearance of stable attractors.
  • Input beams decay when the gain motion exceeds stability thresholds, highlighting limitations in dynamic gain management.