Dynamics, bifurcations and chaos in coupled lasers

Experiments and numerical modelling on two different class B lasers that are subjected to external optical light injection are presented. This presentation includes ways of measuring the changes in the laser output, how to numerically describe the systems and how to construct diagrams of the dynamic...

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Bibliographic Details
Published in:Philosophical transactions of the Royal Society of London. Series A: Mathematical, physical, and engineering sciences physical, and engineering sciences, 2008-02, Vol.366 (1864), p.427-435
Main Authors: Lindberg, Asa Marie, Fordell, Thomas, Valling, Simo
Format: Article
Language:English
Subjects:
bifurcation diagram
Bifurcation Diagram, Solid-State Laser
Chaos theory
Dynamics
Laser modes
Laser power
Lasers
Optical Injection
Population inversion
Relaxation oscillations
Semiconductor Laser
Semiconductor lasers
Solid state lasers
solid-state laser
Time series
Visible spectrum
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Summary:Experiments and numerical modelling on two different class B lasers that are subjected to external optical light injection are presented. This presentation includes ways of measuring the changes in the laser output, how to numerically describe the systems and how to construct diagrams of the dynamical states in the plane frequency detuning between lasers and injection strength. The scenarios for the semiconductor laser include an area of frequency locking and islands of chaotic behaviour embedded in and mixed with periodic doubling regimes. Using a rate equation model, the largest Lyapunov exponent is calculated as a measure of the stability of equilibriums and the amount of chaos in chaotic regimes. In the solid-state laser case, different dynamical regions were clearly observed. The found boundaries were identified experimentally, using an identification method, and numerically, from bifurcation analysis, as Hopf, saddle-node, period-doubling and torus bifurcations.
ISSN:1364-503X
1471-2962
DOI:10.1098/rsta.2007.2100