Nonlinear dynamics of a self-mixing thin-slice solid-state laser subjected to Doppler-shifted optical feedback
Nonlinear dynamics of a self-mixing thin-slice solid-state laser subjected to Doppler-shifted optical feedback
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多普勒频移光反馈下自混合薄片固态激光器的非线性动力学
DOI：
10.1103/physreve.104.044203
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发表时间：
2021
期刊：
影响因子：
--
通讯作者：
Kenju Otsuka and Seiichi Sudo
中科院分区：
文献类型：
--
作者：
細田 真妃子;山川 義和;酒井 啓司;Kenju Otsuka and Seiichi Sudo
利用强度概率分布、联合时频分析、短时傅里叶变换以及长期时间演化的振幅和相位的无序程度，对自混合激光多普勒速度方案中的线偏振单模薄片激光的混沌振荡进行了动力学表征.通过增加旋转散射体对激光的反馈比，研究了混沌巡游（CI）机制下混沌弛豫振荡（RO）向混沌尖峰振荡（SO）的转变.强度概率分布被发现从RO制度的指数衰减到SO制度的逆幂律，这体现在自组织临界行为，而随机次谐波频率锁定RO和SO的两个周期之间发生在CI制度具有量子噪声（自发发射）诱导的顺序的尖峰振荡的振幅和相位。所有的实验结果都通过数值模拟的模式方程的单模自混合固体激光器受到多普勒频移的光反馈从一个旋转的散射物体。
Chaotic oscillations of a linearly polarized single longitudinal-mode thin-slicelaser placed in a self-mixing laser Doppler velocity scheme were dynamically characterized in terms of the intensity probability distribution, joint time-frequency analysis, and short-term Fourier transformation of temporal evolutions, and the degree of disorder in the amplitude and phase of the long-term temporal evolutions. The transition from chaotic relaxation oscillations (ROs) to chaotic spiking oscillations (SOs) was explored via the chaotic itinerancy (CI) regime by increasing the feedback ratio toward the laser from a rotating scattering object. The intensity probability distribution was found to change from an exponential decay in the RO regime to an inverse power law in the SO regime, which manifests itself in self-organized critical behavior, while stochastic subharmonic frequency locking among the two periodicities of RO and SO takes place in the CI regime featuring quantum-noise (spontaneous-emission)-induced order in the amplitude and phase of the spiking oscillations. All of the experimental results were reproduced by numerical simulations of a model equation of a single-mode self-mixing solid-state laser subjected to Doppler-shifted optical feedback from a rotating scattering object.