Mercier Émeric, Weicker Lionel, Wolfersberger Delphine, Kane Deborah M, Sciamanna Marc
Opt Lett. 2017 Jan 15;42(2):306-309. doi: 10.1364/OL.42.000306.
We experimentally report the sequence of bifurcations destabilizing and restabilizing a laser diode with phase-conjugate feedback when the feedback rate is increased. Specifically, we successively observe the initial steady state, undamped relaxation oscillations, quasi-periodicity, chaos, and oscillating solutions at harmonics up to 13 times the external cavity frequency but also the restabilization to a steady state. The experimental results are qualitatively well reproduced by a model that accounts for the time the light takes to penetrate the phase-conjugate mirror. The theory points out that the system restabilizes through a Hopf bifurcation whose frequency is a harmonic of the external cavity frequency.
我们通过实验报告了在增加反馈速率时，具有相位共轭反馈的激光二极管失稳和重新稳定的分岔序列。具体而言，我们依次观察到初始稳态、无阻尼弛豫振荡、准周期性、混沌以及高达外腔频率13倍谐波的振荡解，同时也观察到重新稳定到稳态的过程。一个考虑了光穿透相位共轭镜所需时间的模型很好地定性再现了实验结果。该理论指出，系统通过霍普夫分岔重新稳定，其频率是外腔频率的谐波。
