Abstract
A symmetric model based on optically pumped quantum dot (QD) spin-polarized vertical cavity surface emitting lasers (spin-VCSELs) subject to mutual coupling is proposed. Compared with the conventional solitary model, more plentiful dynamical regimes associated with different dynamical regions are displayed visually by numerous bifurcation maps, and the detailed direct numerical simulations accurately reveal the dependence of dynamical behavior on external and internal parameters through introducing mutual coupling scheme. We then find that the roles played by the mutual coupling strength and delay time are remarkably significant in intensifying the regime of complex dynamical oscillation. Beyond that, the crucial effects of capture rate, gain parameter, linewidth enhancement factor and frequency detuning on determining the evolvement of dynamical behavior in the mutually coupled QD spin-VCSELs model are shown evidently in the plane of the optical pump intensity and polarization. Through a comprehensive investigation of the dynamical behavior dependent on key parameters, the dynamical mechanism expressed in the current model can be adjusted and even controlled well. Therefore, the involved efforts are enlightening and foresighted to promote a deeply research in the field of QD lasers-based expansion.
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Data sharing is not applicable to this article as no datasets were generated or analyzed during the current study.
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Acknowledgements
We acknowledge Natural Science Foundation of Chongqing City (Grant No. cstc2016jcyjA0581); Postdoctoral Science Foundation of China (Grant No. 2016M590875); and Fundamental Research Funds for the Central Universities (Grant XDJK2018B012).
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Jiang, X., Xie, Y., Liu, B. et al. Dynamics of mutually coupled quantum dot spin-VCSELs subject to key parameters. Nonlinear Dyn 105, 3659–3671 (2021). https://doi.org/10.1007/s11071-021-06760-1
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DOI: https://doi.org/10.1007/s11071-021-06760-1