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噪音关联对单模激光光强定态几率分布的影响 总被引:1,自引:1,他引:0
从理论上对加性白噪音和乘性色噪音之间存在关联作用的单模激光立方模型进行了分析.通过数值计算得到;噪音关联时间和噪音关联强度参量对光强定态几率分布曲线有很大影响;特别地,当两噪音之间存在完全负关联时,光强被锁定在某一固定值处. 相似文献
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STATIONARY PROBABILITY DISTRIBUTION FOR COLORED-LOSS-NOISE MODEL OF A SINGLE-MODE DYE LASER 下载免费PDF全文
We apply the interpolation procedure to calculate the stationary probability distribution of the colored-loss-noise model of a single-mode dye laser operating above the threshold with correlation time τ covering a very wide range. By stochastic Runge-Kutta algorithm, we also carry out numerical simulations of steady-state properties. Comparing the results of the interpolation procedure and the unified colored-noise approximation with simulation results, we find that the agreement between the results of the interpolation procedure and the simulation results is much better than that of the unified colored-noise approximation when correlation time τ covers a range from moderate to large. We conclude that the interpolation procedure really improve the accuracy of predictions for this system. 相似文献
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The transition rate of a double well system driven by cross-correlated noises has been investigated, in when the correlation times between the noises are nonzero. From numerical computation, we find followings: (1) The transition rate decreases as the ,λ(λ is the strength of the correlations between noises) increases. (2) The transition rate increases as the τ(τ is the correlation time between noises) increases. It imglies that τ and λ play opposite roles in the transition rate of the system (3). For the case of perfectly correlated noises (λ= 1), there is no the suppressed phenomenon in the double well system with cross-correlated noise sources. 相似文献
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研究Nagel-Schreckenberg(NS)交通流元胞自动机模型在不考虑车辆随机延迟情况下的决定论性模型的基本图,即渐近稳态的车流平均速度作为车辆密度的函数关系.证明决定论性NS模型,在车流的自组织作用下,其渐近稳态的基本图,与决定论性Fukui-Ishibashi(FI)交通流模型的基本图完全相同.这个结果表明,若把FI交通流模型中的车辆突然加速方式(即车辆速度可以在仅仅一个时步内加速到其最高速限M或前方空距所允许的最大速度),改变为车辆逐步加速方式(车辆速度在每一时步中最多仅能增加一个速度单位),则车辆的自组织相互作用,并不会改变其车流的长时间渐近稳态行为.
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薛明伦 《核聚变与等离子体物理》1987,(3)
本文用简化模型分析托卡马克装置,建议用等离子体往径向速度振荡和角向磁场振荡的相互作用产生一个定常环向电动势以驱动稳态电流。这可由按一定相位差调制两个外加参量来达到。按反应堆参数估计,这种调制频率可以是工业频率。 相似文献
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Z. WÓJCICKI 《Journal of sound and vibration》2002,253(4):755-772
The aim of this paper is to determine whether one dynamic absorber can reduce the amplitude of the steady state vibration of a parametric system for natural and parametric resonance frequencies simultaneously. The efficiency of both the conventional dynamic absorber and the parametric absorber is analyzed. The first order sensitivity analysis of parametric periodic systems in the time domain is applied to obtain logarithmic sensitivity functions in the frequency domain. The first order sensitivity logarithmic functions are used to tune the conventional absorber and the parametric absorber. 相似文献
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一种基于偏振态检测技术的单模光纤应力双折射测量法 总被引:1,自引:1,他引:1
针对光纤应力双折射理论与实际应用存在的差异,提出了一种简单而实用的基于偏振态检测技术的光纤应力双折射测量的方案,并用实验结果证明了其有效性. 相似文献
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固体激光腔中的热聚焦透镜的屈光度l/ f , 作为腔的动力学因子, 对腔的运行特性具有关键的影响作用.本文运用变换圆图解方法, 对固体激光睦的稳定性、输出功率特征和模式特性作了详细的动力学分析, 并给出了它们对动力学因子的依赖关系.
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固体激光腔中的热聚焦透镜的屈光度1/f,作为腔的动力学因子,对腔的运行特性具有关键的影响作用。本文运用变换圆图解方法,对固体激光腔的稳定性、输出功率特征和模式特性作了详细的动力学分析,并给出了它们对动力学因子的依赖关系。 相似文献
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本文研究了原子间的偶极-偶极力对真空态单光子Tavis-Cummings模型中辐射场的非经典效应的影响。 相似文献
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流体—粒子模型及托卡马克等离子体稳态粒子流 总被引:2,自引:2,他引:0
基于俘获粒子与非俘获粒子对外力作用的响应截然不同,本文提出了一个简单而有效描述托卡马克等离子体响应特征的“流体-粒子”模型。 相似文献