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Drift-induced excitable localized states.

M Turconi1, M Giudici1, S Barland1

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Researchers experimentally studied laser localized structures, observing noise-triggered nucleation and gradient-driven motion. This controllable dynamics in excitable systems could lead to new applications beyond data storage.

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Area of Science:

  • Nonlinear optics
  • Laser physics
  • Complex systems

Background:

  • Excitable localized states, combining temporal excitable pulses and transverse cavity solitons, were theoretically predicted.
  • These states represent light pulses localized in space with finite duration.

Purpose of the Study:

  • To experimentally investigate the nucleation and motion of laser localized structures.
  • To explore their dynamics on a device defect and along a spatial gradient.

Main Methods:

  • Experimental observation of laser localized structures.
  • Analysis of dynamics in the reference frame of the drifting structure.
  • Investigation of noise-triggered nucleation and gradient-induced motion.

Main Results:

  • Demonstrated nucleation of laser localized structures triggered by noise.
  • Observed deterministic motion along a spatial gradient, leading to vanishing.
  • Confirmed that the dynamics exhibit features typical of excitable systems.

Conclusions:

  • The controlled dynamics of laser localized structures offer potential for novel applications.
  • These applications extend beyond conventional stationary data bits.