Paulau P V, Gomila D, Ackemann T, Loiko N A, Firth W J
Institute of Physics, NASB, Belarus, Scaryna Prospekt 70, 220072 Minsk, Belarus and Department of Physics, University of Strathclyde, 107 Rottenrow East, Glasgow G4 0NG, United Kingdom.
Phys Rev E Stat Nonlin Soft Matter Phys. 2008 Jul;78(1 Pt 2):016212. doi: 10.1103/PhysRevE.78.016212. Epub 2008 Jul 28.
In this paper, we analyze a model of broad area vertical-cavity surface-emitting lasers subjected to frequency-selective optical feedback. In particular, we analyze the spatio-temporal regimes arising above threshold and the existence and dynamical properties of cavity solitons. We build the bifurcation diagram of stationary self-localized states, finding that branches of cavity solitons emerge from the degenerate Hopf bifurcations marking the homogeneous solutions with maximal and minimal gain. These branches collide in a saddle-node bifurcation, defining a maximum pump current for soliton existence that lies below the threshold of the laser without feedback. The properties of these cavity solitons are in good agreement with those observed in recent experiments.
在本文中，我们分析了一种受频率选择性光反馈作用的广域垂直腔面发射激光器模型。特别地，我们分析了阈值以上出现的时空状态以及腔孤子的存在性和动力学特性。我们构建了静态自局域态的分岔图，发现腔孤子分支从标记具有最大和最小增益的均匀解的退化霍普夫分岔处出现。这些分支在鞍结分岔处碰撞，确定了孤子存在的最大泵浦电流，该电流低于无反馈时激光器的阈值。这些腔孤子的特性与最近实验中观察到的特性高度吻合。
