Dynamics of mutually coupled quantum dot spin-VCSELs subject to key parameters

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 di...

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Bibliographic Details
Published in:Nonlinear dynamics 2021-09, Vol.105 (4), p.3659-3671
Main Authors: Jiang, Xiao, Xie, Yiyuan, Liu, Bocheng, Ye, Yichen, Song, Tingting, Chai, Junxiong, Tang, Qianfeng
Format: Article
Language:English
Subjects:
Automotive Engineering
Classical Mechanics
Control
Delay time
Direct numerical simulation
Dynamical Systems
Engineering
Mathematical models
Mechanical Engineering
Mutual coupling
Original Paper
Parameters
Quantum dots
Spin dynamics
Vertical cavity surface emission lasers
Vertical polarization
Vibration
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Summary: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.
ISSN:0924-090X
1573-269X
DOI:10.1007/s11071-021-06760-1