Dynamics in Multimode Lasers and Their Applications

1.用一种新的动态统计变量“循环数”对全局耦合光学系统进行了动态表征，并验证了它的重要性质。将该方法应用于调制多模激光系统，并根据增益循环消失定律，确定了注入种子的阶乘动态模式记忆、分组混沌和合作同步混沌等一般动力学状态的物理起源。2.在多模激光器内腔二次谐波产生模型下，研究了全局耦合光学系统的反相动力学。在从局部混沌到全局混沌的过渡过程中发现了混沌巡游现象，并证明了它的普遍性质，即通过内部产生的混沌力在失稳的奇异吸引子废墟之间随机切换.聚类、分组、多异宿交叉的自诱导开关和受控动态模式 ...更多信息 涉及阶乘数量的共存模式的端代在二次谐波的高转换率的情况下被数值地证明。用解析方法推导出反相多模激光器中量子噪声功率谱的普遍关系，并用LNP激光器进行了实验验证。3.用LNP激光器实验验证了近共振次谐波微扰对多模激光混沌振荡的抑制，并在理论上重现。本文研究了激光二极管泵浦的微片LNP多模激光器在多次频率调制下的非线性响应。发现了具有模间参变共振特征的团簇和呼吸运动，证明了调制信号模式与总输出功率谱模式之间的简单对应关系，并提出了复杂系统的这种合作“线性响应”在半经典保密传输中的适用性。4.研究了激光二极管泵浦微片LNP激光器中高密度泵浦对激射模谱的影响。同时单频振荡的不同过渡，打破多模振荡和低频反相不稳定性进行了演示。基于高Nd浓度激光器中包含共振再吸收效应和俄歇复合过程的多跃迁振荡速率方程的分析再现了实验观测。动力学不稳定性已被证明是由布居俘获产生的低能级间的低频偏振相干引起的。少

1.Dynamical characterization of globally coupled optical systems is carried out by a novel dynamic statistical variable of "circulations" and its significant property is verified. This methology has been applied to modulated multimode laser systems and the physical origin of their generic dynamical states including factorial dynamic pattern memory by injection seeding, grouping chaos and cooperatively synchronized chaos has been identified in terms of vanishing gain circulation law.2.Antiphase dynamics in globally coupled optical systems are investigated in the model of intracavity second-harmonic generation in multimode lasers. Chaotic itinerancy has been found in the transition process from local chaos to global chaos and its universal property of random switching among ruins of destabilized strange attractor by an internally generated chaotic force has been demonstrated. Clustering, grouping, self-induced switching featuring multiple heteroclinic crossing, and controlled dynamic pat … More tern generations involving a factorial number of coexisting patterns are demonstrated numerically in the regime of high conversion to second-harmonic. Universal relation in quantum noise power spectra in antiphase multimode lasers has been derived analytically and demonstrated experimentally using LNP lasers.3.Suppression of chaotic multimode laser oscillations by nearly-resonant subharmonic perturbation has been demonstrated experimentally in LNP lasers and reproduced theoretically. A nonlinear response of laser-diode-pumped michrochip LNP multimode lasers that is subjected to multiplefrequency modulations is investigated. Clustering and breathing motions featuring intermode parametric resonances are found. A simple correspondence between the modulation signal patterns and the total-output power-spectrum patterns is demonstrated and applicability of such a cooperative "linear-response" of complex systems to semiclassical secure transmissions has been proposed.4.The effect of high-density pumping on lasing mode spectra is investigated in a laser-diode-pumped microchip LNP laser. Simultaneous single frequency oscillations on different transitions, breakup of multimode oscillations and low frequency antiphase instabilities are demonstrated. Analyzes based on multitransition oscillation rate equations including resonant reabsorption effect and Auger recombination process in high Nd density lasers reproduced experimental observations. Dynamic instabilities have been shown to arise from low frequency polarization coherence among lower states which is created by population trapping. Less