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Related Experiment Videos

Nonlinear dynamics of semiconductor lasers with active optical feedback.

S Bauer1, O Brox, J Kreissl

  • 1Fraunhofer-Institut for Telecommunications, Heinrich-Hertz-Institut, Einsteinufer 37, 10587 Berlin, Germany. bauer@hhi.fraunhofer.de

Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics
|March 5, 2004
PubMed
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This study analyzes nonlinear dynamics in semiconductor lasers with optical feedback. Researchers tuned feedback to control laser modes, observing transitions from steady states to chaotic behavior.

Area of Science:

  • Optoelectronics
  • Nonlinear Dynamics
  • Semiconductor Lasers

Background:

  • Semiconductor lasers are crucial optoelectronic devices.
  • Understanding their nonlinear dynamics is key for advanced applications.
  • Optical feedback significantly influences laser behavior.

Purpose of the Study:

  • To theoretically and experimentally analyze nonlinear dynamics in semiconductor lasers with active optical feedback.
  • To investigate the short-cavity regime using monolithically integrated multisection devices.
  • To explore how tunable feedback affects laser modes and dynamics.

Main Methods:

  • In-depth theoretical and experimental analysis.
  • Utilizing a monolithically integrated multisection semiconductor laser.

Related Experiment Videos

  • Employing an amplifier section for independent tuning of feedback phase and strength.
  • Observing bifurcations and dynamical transitions.

    • Main Results:

    • Achieved access to the short-cavity regime.
    • Demonstrated separate tuning of feedback phase and strength.
    • Showcased adjustment of the number of lasing modes.
    • Predicted and observed dynamical scenarios including self-pulsation and chaos.
    • Identified bifurcations mediating transitions from steady-state to chaotic output.

    Conclusions:

    • The study provides a comprehensive understanding of nonlinear dynamics in semiconductor lasers with optical feedback.
    • Tunable feedback offers precise control over laser modes and output dynamics.
    • The findings pave the way for novel laser designs and applications requiring complex dynamical behaviors.