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Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators
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Published on: May 30, 2014

On-off intermittency in an optically injected semiconductor laser.

S Osborne1, A Amann, D Bitauld

  • 1Tyndall National Institute, University College Cork, Lee Maltings, Ireland.

Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics
|September 26, 2012
PubMed
Summary
This summary is machine-generated.

We observed on-off intermittency in a semiconductor laser. The study reveals irregular bursts in laser intensity, with a defined threshold distinguishing system states and revealing gaps in duration distributions.

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Area of Science:

  • Optics and Photonics
  • Nonlinear Dynamics
  • Semiconductor Lasers

Background:

  • Optically injected semiconductor lasers exhibit complex dynamics.
  • Understanding intermittency is crucial for laser stability and applications.
  • Dual-mode operation presents unique nonlinear behaviors.

Purpose of the Study:

  • To investigate on-off intermittency in an optically injected dual-mode semiconductor laser.
  • To analyze the chaotic dynamics and intensity bursts of the uninjected mode.
  • To characterize the laminar and bursting states using a threshold intensity.

Main Methods:

  • Experimental observation of on-off intermittency in a dual-mode semiconductor laser.
  • Defining a threshold intensity to differentiate system states.
  • Comparison of experimental results with theoretical predictions for laminar phase durations.
  • Numerical simulations to explore the origin of gaps in duration distributions.

Main Results:

  • Quasi-single-mode chaotic dynamics of the injected mode were observed.
  • Intermittent, irregular bursts in the intensity of the uninjected mode were detected.
  • Excellent agreement with theory for laminar phase durations at low threshold values.
  • A gap in laminar phase duration distribution emerged at higher threshold values.
  • Numerical simulations confirmed the gap arises from large intensity spikes.

Conclusions:

  • The study successfully observed and characterized on-off intermittency in an optically injected dual-mode semiconductor laser.
  • The findings highlight the complex interplay between injected and uninjected modes.
  • The identified gap in laminar phase durations provides new insights into chaotic dynamics in such systems.