Reinoso Jose A, Zamora-Munt Jordi, Masoller Cristina
Departamento de Fisica Fundamental, Universidad Nacional de Educacion a Distancia (UNED), Paseo Senda del Rey 9, E-28040 Madrid, Spain.
Phys Rev E Stat Nonlin Soft Matter Phys. 2013 Jun;87(6):062913. doi: 10.1103/PhysRevE.87.062913. Epub 2013 Jun 19.
We present a numerical study of the pulses displayed by a semiconductor laser with optical feedback in the short-cavity regime, such that the external cavity round-trip time is shorter than the laser relaxation oscillation period. For certain parameters there are occasional pulses, which are high enough to be considered extreme events. We characterize the bifurcation scenario that gives rise to such extreme pulses and study the influence of noise. We demonstrate intermittency when the extreme pulses appear and hysteresis when the attractor that sustains these pulses is destroyed. We also show that this scenario is robust under the inclusion of noise.
我们对短腔半导体激光器在光反馈作用下所显示的脉冲进行了数值研究，此时外腔往返时间短于激光器弛豫振荡周期。对于某些参数，会偶尔出现脉冲，其幅度高到足以被视为极端事件。我们描述了产生此类极端脉冲的分岔情况，并研究了噪声的影响。我们展示了极端脉冲出现时的间歇性以及维持这些脉冲的吸引子被破坏时的滞后现象。我们还表明，在考虑噪声的情况下，这种情况是稳健的。
