期刊
OPTICS EXPRESS
卷 20, 期 20, 页码 22503-22516出版社
OPTICAL SOC AMER
DOI: 10.1364/OE.20.022503
关键词
-
类别
资金
- Belgian Science Policy Office
- European project PHOCUS (EU FET) [240763]
- Research Foundation-Flanders (FWO)
We analyze experimentally and theoretically the effects of delayed optical cross-feedback in semiconductor ring lasers. We show that under appropriate conditions, feeding of only one directional mode back into the counter-propagating mode leads to square-wave oscillations. In this regime, the laser switches regularly between the two counter-propagating modes with a period close to twice the roundtrip time in the external feedback loop. We find that these oscillations are robust and appear for a wide range of parameters as long as a small asymmetry in the linear coupling between both modes is present. We show that by increasing the feedback strength or the injection current, the square-wave oscillations gradually disappear. Due to noise, mode-hopping between stable lasing in one directional mode and square wave oscillations is observed in this transition region. (C) 2012 Optical Society of America
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据