Dynamics of a passively mode-locked semiconductor laser subject to dual-cavity optical feedback
Dynamics of a passively mode-locked semiconductor laser subject to dual-cavity optical feedback
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DOI：
10.1103/physreve.93.022205
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发表时间：
2016-02-05
影响因子：
2.4
通讯作者：
Luedge, Kathy
中科院分区：
文献类型：
--
作者：
Jaurigue, Lina;Nikiforov, Oleg;Luedge, Kathy
利用延迟微分方程模型研究了双腔光反馈对被动锁模半导体激光器发射动力学和定时稳定性的影响，并通过初步实验验证了定时稳定性的结果。通过对反馈延迟时间和反馈强度的分岔分析，研究了双稳性、准周期动力学和混沌动力学以及基本锁模，全面概述了双腔光学反馈引起的非线性发射动力学。确定了提高双腔光反馈定时稳定性的最佳自锁范围。与单腔反馈相比，预测在所研究的参数范围内，时序抖动减少和重复率调谐范围的增加可达三倍。通过抑制噪声引起的波动，预测了双腔反馈在短时间尺度和长时间尺度上的定时稳定性。基于数值预测，实验发现，当两个反馈腔都是谐振腔时，最大时序抖动减少了180倍，并伴有58 dB的边带减少。
We study the influence of dual-cavity optical feedback on the emission dynamics and timing stability of a passively mode-locked semiconductor laser using a delay differential equation model and verify the timing stability results by an initial experiment. By bifurcation analysis in dependence of the feedback delay times and feedback strength bistability, quasiperiodic and chaotic dynamics, as well as fundamental mode-locking are investigated, yielding a comprehensive overview on the nonlinear emission dynamics arising due to dual-cavity optical feedback. Optimum self-locking ranges for improving the timing stability by dual-cavity optical feedback are identified. A timing jitter reduction and an increase of the repetition rate tuning range of up to a factor of three, compared with single-cavity feedback, are predicted for the parameter ranges investigated. Improved timing stability on short and long timescales is predicted for dual-cavity feedback through the suppression of noise-induced fluctuations. Based on the numerical predictions, experimentally, a maximum timing jitter reduction up to a factor of 180 is found, accompanied by a side-band reduction by a factor of 58 dB, when both feedback cavities are resonant.