Influence of time-delayed feedback on the dynamics of temporal localized structures in passively mode-locked semiconductor lasers

被引:3
|
作者
Seidel, Thomas G. [1 ]
Javaloyes, Julien [2 ,3 ]
Gurevich, Svetlana V. [1 ,2 ,3 ,4 ]
机构
[1] Univ Munster, Inst Theoret Phys, Wilhelm Klemm Str 9, D-48149 Munster, Germany
[2] Univ Illes Balears, Dept Fis, Mallorca 07122, Spain
[3] Univ Illes Balears, IAC 3, Mallorca 07122, Spain
[4] Univ Munster, Ctr Nonlinear Sci CeNoS, Corrensstr 2, D-48149 Munster, Germany
关键词
DIFFERENTIAL EQUATIONS; LOCKING;
D O I
10.1063/5.0075449
中图分类号
O29 [应用数学];
学科分类号
070104 ;
摘要
In this paper, we analyze the effect of optical feedback on the dynamics of a passively mode-locked ring laser operating in the regime of temporal localized structures. This laser system is modeled by a set of delay differential equations, which include delay terms associated with the laser cavity and the feedback loop. Using a combination of direct numerical simulations and path-continuation techniques, we show that the feedback loop creates echoes of the main pulse whose position and size strongly depend on the feedback parameters. We demonstrate that in the long-cavity regime, these echoes can successively replace the main pulses, which defines their lifetime. This pulse instability mechanism originates from a global bifurcation of the saddle-node infinite-period type. In addition, we show that, under the influence of noise, the stable pulses exhibit forms of a behavior characteristic of excitable systems. Furthermore, for the harmonic solutions consisting of multiple equispaced pulses per round-trip, we show that if the location of the pulses coincides with the echo of another, the range of stability of these solutions is increased. Finally, it is shown that around these resonances, branches of different solutions are connected by period-doubling bifurcations.
引用
收藏
页数:9
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