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对声光双稳态系统的稳定性进行了理论分析,用图解方式研究了不动点的稳定性,用数值求解的方法,确定了分岔点的具体位置,同时对系统经过倍周期分岔和阵法混沌途径产生混沌进行了分析.通过对系统状态随参数变化的分岔图和最大Lyapunov指数变化情况的比较分析发现本文的结果是自洽的. 相似文献
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Synchronization of chaotic vertical-cavity surface-emitting lasers (VCSELs) is achieved by external chaotic signal modulation successfully. Simulation indicates that we can get chaos synchronization if the intensity of external chaotic signal is large enough. First of all, we use direct current modulation to achieve the chaos of VCSELs, and determine the laser's chaotic state by analyzing time series of the output and the corresponding power spectrum. And then we achieve synchronization of the two chaotic systems by external chaotic signal parameter modulation. We also find that the larger the modulation intensity is, the easier it is to achieve synchronization for chaotic VCSELs. This approach can also be applied to systems with a number of modulated lasers. 相似文献
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Based on the rate equations, we have investigated three types of chaos
synchronizations in injection-locked semiconductor lasers with optical
feedback. Numerical simulation shows that the synchronization can be
realized by the symmetric or asymmetric laser systems. Also, the influence
of parameter mismatches on chaos synchronization is investigated, and the
results imply that these two lasers can achieve good synchronization, with
smaller tolerance of parameter mismatch existing. 相似文献
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利用二阶微扰论的方法计算了动量转移与激光场的偏振方向垂直条件下,电子-He原子碰撞的自由-自由跃迁的单光子和两光子交换的微分截面,结果与最近的实验结果符合得很好。 相似文献
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