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首页> 外文会议>World Multiconference on Systemics, Cybernetics and Informatics(SCI 2002) v.6: Industrial Systems and Engineering I; 20020714-20020718; Orlando,FL; US >Phase Synchronization in Coupled Nd:YAG Laser
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Phase Synchronization in Coupled Nd:YAG Laser

机译：Nd：YAG耦合激光的相位同步

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Recently synchronization in coupled chaotic oscillators has been extensively studied because of its potential applications to many different disciplines of science and technology such as laser dynamics, electronic circuits, mechanical systems, chemical reaction, and biological systems. Particularly synchronization appearing in mutually coupled chaotic oscillators with slight parameter mismatch was studied as one of the fundamental phenomena in biological systems. In the oscillators, the transition from non-synchronization to the lag synchronization through phase synchronization is observed as the coupling strength increases. Here phase synchronization is characterized by coincide of the phases of two chaotic oscillators while their amplitudes are not correlated. Lag synchronization is defined by coincide of their phases and amplitude with a time delay. As the coupling strength increases more, the lag time becomes smaller and smaller. After this observation, synchronization phenomena appearing in coupled chaotic oscillators with slight parameter mismatch is considered to be one of the most intriguing subjects in connection with Huygens' discovery at the beginning of the modern scientific age. In apart from this, in more recent, it has been reported that phase synchronization can develop to complete synchronization without lag synchronization in coupled hyper-chaotic Roessler oscillators or Lorenz oscillators. So in this paper we aim to study what appears in coupled Nd:YAG lasers as the coupling strength increases, and study the characteristics of phase synchronization. Meanwhile synchronization phenomenon in coupled lasers was also a subject of extensive study because laser is one of the important nonlinear dynamical systems generating rich chaotic phenomena. Through studies of synchronization phenomena in lasers, chaotic characteristics have been investigated experimentally and applied to practical uses such as communication. And, so far most of the studies of synchronization in lasers have been focused on complete synchronization. However when the operating conditions of two lasers are slightly different from each other, the lasers can exhibit phase, lag, or complete synchronization according to the coupling strength. So in this paper we observe phase synchronization in coupled cw Nd: YAG lasers according to the coupling strength. To summarize our results briefly, we observed a transition route from non-synchronization to complete synchronization through intermittent phase jumps and phase synchronization as the coupling strength increases.
机译：最近，由于耦合混沌振荡器在许多不同的科学和技术领域（如激光动力学，电子电路，机械系统，化学反应和生物系统）的潜在应用，已对其进行了广泛的研究。特别地，在具有轻微参数失配的互耦合混沌振荡器中出现的同步被研究为生物系统中的基本现象之一。在振荡器中，随着耦合强度的增加，观察到了从非同步到相位同步的滞后同步的转变。这里，相位同步的特征在于两个混沌振荡器的相位一致，而它们的幅度不相关。滞后同步通过其相位和幅度与时间延迟的重合来定义。随着耦合强度的增加，滞后时间变得越来越小。经过这一观察，在现代科学时代初期，与惠更斯的发现有关的，在耦合混沌振荡器中出现的，具有微小参数失配的同步现象被认为是最吸引人的主题之一。除此之外，最近有报道说，在耦合的超混沌Roessler振荡器或Lorenz振荡器中，相位同步可以发展为完成同步而没有滞后同步。因此，在本文中，我们旨在研究随着耦合强度的增加，Nd：YAG耦合激光器中出现的现象，并研究相位同步的特性。同时，由于激光是产生丰富混沌现象的重要非线性动力学系统之一，因此耦合激光器中的同步现象也是广泛研究的课题。通过研究激光器中的同步现象，已对混沌特性进行了实验研究，并将其应用于通信等实际​​应用中。而且，到目前为止，激光同步的大多数研究都集中在完全同步上。但是，当两个激光器的工作条件略有不同时，根据耦合强度，激光器可能会显示相位，滞后或完全同步。因此，在本文中，我们根据耦合强度观察了耦合的Cw Nd：YAG耦合激光器的相位同步。为了简要总结我们的结果，我们观察到随着耦合强度的增加，通过间歇性的相跳和相位同步，从非同步过渡到完全同步的过渡路径。

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