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Limits on the excitable behavior of a semiconductor laser with optical feedback
Jorge Manuel Méndez1, J Aliaga, G B Mindlin
1Departamento de Física J.J. Giambiagi, Facultad de Ciencias Exactas y Naturales, U.B.A., Ciudad Universitaria, Pabellón I, 1428 Buenos Aires, Argentina. jmendez@df.uba.ar
Summary
Semiconductor lasers with optical feedback exhibit complex, noise-driven excitable behavior. This study identifies the specific parameter regions where this phenomenon occurs, finding it within the low-frequency fluctuation domain.
Area of Science:
- Physics
- Nonlinear Dynamics
- Laser Physics
Background:
- Semiconductor lasers with optical feedback are known to exhibit complex dynamical behaviors.
- A recent proposal suggests this behavior can be characterized as noise-driven excitability.
Purpose of the Study:
- To determine the specific parameter space regions where semiconductor lasers with optical feedback demonstrate noise-driven excitable behavior.
- To delineate the relationship between noise-driven excitability and low-frequency fluctuations in these laser systems.
Main Methods:
- Investigation of semiconductor laser dynamics under varying optical feedback conditions.
- Analysis of system behavior across different parameter spaces to identify excitable regimes.
- Comparison of identified excitable regions with regions exhibiting low-frequency fluctuations.
Main Results:
- The study confirms that noise-driven excitable behavior is observable in semiconductor lasers with optical feedback.
- A defined region within the parameter space supports this noise-driven excitable behavior.
- This region of noise-driven excitability was found to be a subset of the parameter space exhibiting low-frequency fluctuations.
Conclusions:
- The description of noise-driven excitability is adequate for specific parameter regions in semiconductor lasers with optical feedback.
- The occurrence of noise-driven excitability is intrinsically linked to, and constrained within, the broader phenomenon of low-frequency fluctuations.