Asymmetric excitable phase triggering in an optically injected semiconductor laser
Asymmetric excitable phase triggering in an optically injected semiconductor laser
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DOI：
10.1364/ol.410085
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发表时间：
2021-01-15
期刊：
影响因子：
3.6
通讯作者：
Kelleher, B.
中科院分区：
文献类型：
--
作者：
Dillane, M.;Lingnau, B.;Kelleher, B.
兴奋性的定义特征之一是存在一个可兴奋的阈值：产生可兴奋反应所需的最小扰动幅度。我们分析了一个光学注入的双态量子点激光器，它显示了一个双态随机可激发动力学。我们证明了这种动力学的确定性触发可以通过光学位相微扰来实现。此外，我们还证明了该系统实际上存在两个非对称的可激发阈值，对应于光学位相微扰的两个可能方向。对于足够快的扰动，出现一个可激发的区间，并且扰动幅度有一个极限，超过这个极限就不再出现激发，这是迄今为止在兴奋性研究中没有观察到的现象。(C)2021年美国光学学会
One of the defining characteristics of excitability is the existence of an excitable threshold: the minimum perturbation amplitude necessary to produce an excitable response. We analyze an optically injected dual state quantum dot laser, previously shown to display a dual state stochastic excitable dynamic. We show that deterministic triggering of this dynamic can be achieved via optical phase perturbations. Further, we demonstrate that there are in fact two asymmetric excitable thresholds in this system corresponding to the two possible directions of optical phase perturbations. For fast enough perturbations, an excitable interval arises, and there is a limit to the perturbation amplitude, above which excitations no longer arise, a phenomenon heretofore unobserved in studies of excitability. (C) 2021 Optical Society of America