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arXiv 1806.08950physics.opticsphysics.data-an
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弱周期强迫下laser系统锁定区转变的实验表征

Experimental characterization of transitions between locking regimes in a laser system with weak periodic forcing

J Tiana-Alsina, C Quintero-Quiroz, M. C. Torrent, C Masoller

发表信息：
Phys. Rev. E 99, 022207 (2019)
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摘要：

振荡器使其自然节奏适应外部周期信号的夹带（或锁定）现象在物理学、化学、生物学等中是众所周知的;然而，用小幅度信号控制随机非线性系统是一项具有挑战性的任务，并且允许低成本实验的系统很少。在这里，我们使用一个半导体激光器与光学反馈，在政权，它随机发射突然尖峰。我们量化的质量夹带的光学尖峰周期性的，小幅度的电扰动的激光泵浦电流。我们使用成功率（SR）来计算每次扰动后短时间窗口内发生的尖峰数量，以及计算窗口外发生的额外尖峰的假阳性率（FPR）。ROC曲线（SR对FPR图）揭示了参数区域，其中电扰动完全控制激光尖峰，夹带它们，使得激光器在每次扰动之后不久发射一个且仅一个尖峰（即，SR=1，FPR=0）。我们还描述了微扰振幅和频率变化时的锁定-解锁跃迁。

英文摘要：

The entrainment (or locking) phenomenon, by which an oscillator adapts its natural rhythm to an external periodic signal, is well-known in physics, chemistry, biology, etc.; however, controlling an stochastic nonlinear system with a small-amplitude signal is a challenging task, and systems that allow for low-cost experiments are scarce. Here we use a semiconductor laser with optical feedback, operated in the regime where it randomly emits abrupt spikes. We quantify the quality of the entrainment of the optical spikes to periodic, small-amplitude electric perturbations of the laser pump current. We use the success rate (SR) that counts the number of spikes that occur within a short time window after each perturbation, and the false positive rate (FPR) that counts the additional spikes that occur outside the window. The ROC curves (SR vs. FPR plots) uncover parameter regions where the electric perturbations fully control the laser spikes, entraining them, such that the laser emits, shortly after each perturbation, one and only one spike (i.e., SR=1 and FPR=0). We also characterize the locking-unlocking transitions when the perturbation amplitude and frequency vary.

机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。

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