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Switching time in optically bistable injection-locked semiconductor lasers.

Dejan M Gvozdić1, Marko M Krstić, Jasna V Crnjanski

  • 1School of Electrical Engineering, University of Belgrade, Bulevar kralja Aleksandra 73b, 11000 Belgrade, Serbia. gvozdic@etf.rs

Optics Letters
|November 4, 2011
PubMed
Summary
This summary is machine-generated.

This study shows that small, short variations in master laser power or frequency can switch a bistable laser. This switching significantly alters the slave laser

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Area of Science:

  • Laser Physics
  • Nonlinear Optics
  • Quantum Optics

Background:

  • Bistable lasers exhibit two stable operating states.
  • Injection-locking is a technique used to control laser output.
  • Understanding state switching is crucial for laser applications.

Purpose of the Study:

  • To theoretically investigate state switching in a dispersive bistable injection-locked slave laser.
  • To determine the parameters that can induce switching.
  • To analyze the effect of switching on laser power and photon phase.

Main Methods:

  • Theoretical investigation of a dispersive bistable injection-locked slave laser.
  • Utilizing an analytical model to calculate switching dynamics.
  • Simulating the effects of master laser injection power and frequency variations.

Main Results:

  • Switching between states is achievable with small, short (10-50 ps) variations in master laser injection power or frequency.
  • Switching leads to significant variations in the slave laser's photon phase (approximately 5π/6).
  • The switching time is dependent on the magnitude of injection power and frequency detuning variations.

Conclusions:

  • Precise control over laser states is possible through master laser parameter manipulation.
  • The findings offer insights into controlling laser dynamics for potential applications.
  • The study provides a theoretical framework for understanding and predicting laser switching behavior.