Summary

Proceedings of the 2012 International Symposium on Nonlinear Theory and its Applications

2012

Session Number:A3L-D

Session:

Number:195

Deterministic polarization chaos in a laser diode

Marc Sciamanna,  Martin Virte,  Hugo Thienpont,  Krassimir Panajotov,  

pp.195-198

Publication Date:

Online ISSN:2188-5079

DOI:10.15248/proc.1.195

PDF download (612.3KB)

Experiments on quantum well and recently quantum dot VCSELs have shown that the increase of injection current may lead to a transition from a linearly polarized light emission at threshold to a region of nonlinear dynamics (self-pulsing) accompanying polarization switching. However these experiments brought different conclusions on the frequency of self-pulsation: the polarization dynamics occurred on a nanosecond time-scale that related either to the birefringence induced frequency splitting or to the relaxation oscillation frequency. With the use of advanced continuation methods applied to the well-known spin-flip (SFM) model, we bring now new light into the bifurcations explaining deterministic self-pulsing and deterministic polarization chaos. We are then able not only to reconcile these a priori contradicting experiments and to interpret experimental results as resulting from polarization chaos.

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