An equivalent circuit model for heterostructure LD is presented considering the case of weak coherent optical feedback effect and high photon density so as to improve the accuracy of model. Creatively cooperating the solve rate equation with the microwave network theory, a noise equivalent circuit model for LD is given so that the laser noise simulation is not only limited in calculation. In regard of the feature of high-speed low-threshold laser a new method for LD model parameter extraction is presented only by using the characteristics of near-threshold port impedance and the relaxation oscillation frequency characteristics above the threshold. On the basis of above work a quantum well laser equivalent circuit model is given compatible with heterostructure laser considering separate confinement heterostructure and thermionic emission effect.
提出了一个考虑弱相干光反馈效应和高光子密度情况下的异质结半导体激光器的等效电路模型，克服了以前模型的局限性；将求解器件物理方程和微波网络原理相结合，提出了第一个实用化的异质结半导体激光器噪声等效电路模型；针对高速低阈值半导体激光器的特点，提出了一种仅利用阈值附近端口阻抗特性和阈值以上驰豫振荡频率特性来提取半导体激光器的模型参数的新方法；在普通异质结激光器等效电路模型的基础上，考虑了分离限制异质结的影响和热离子辐射效应，提出了一个和异质结激光器等效电路模型相兼容的量子阱半导体激光器等效电路模型。
The slowdown of light resulting from dramatic change of refractive index by spectra hole which is produced by coherent population oscillation is investigated in a ruby crystal at 514.5 nm from Ar + laser.
用氩离子激光（514.5nm）单光束入射到红宝石晶体中，用相干布居数振荡效应产生烧孔。利用光谱烧孔使介质折射率发生急剧变化，导致光的群速变慢。
It is found that the phase can be used to modify the absorption-dispersion characteristic of the system. This striking behavior is the result of coherence interference between two contributions of coherent population oscillation and four wave mixing effects.
研究发现相位效应可以改变介质的吸收和色散特性，这是相干粒子数振荡和四波混频对极化率的贡献相互干涉的结果。
We demonstrate electrical and optical controls of fast light using the coherent population oscillation (CPO) and four wave mixing (FWM) in the gain regime of QW SOAs.
在量子阱半导体光放大器的增益管理中，应用相干布居振荡和四波混频技术，我们证明了慢（快）光的电子和光学控制。
In different areas, using the spin coherent states path integral method, we show that the ground state energy and the effective magnetic moment of the system exhibit an interesting macroscopic quantum oscillation (MQO) phenomenon.
对应不同的基态相区域，外加纵场时，利用自旋相干态路径积分方法计算得出基态能和有效磁矩随外磁场发生振荡；
When driving is strong enough, the population difference exhibits undamped large-amplitude coherent oscillation.
当驱动足够强时，粒子束翻转则可以出现无阻尼的大幅度相干振荡。
The oscillation of photon number distribution and the purity in an odd or even coherent state are investigated with the characteristic function methods.
用特征函数方法讨论了奇、偶相干态在热混沌光场态影响下的光子统计性质.讨论表明，热光场态的影响使得奇、偶相干态纯度随参数变化呈现复杂的特性；
An integrated surface multi-junction MOMOM (metal-oxide-metal-oxide-metal) is reported and coherent electro-magnetic oscillation is observed in the low frequency range.
提出并研制了一种集成式表面多结MOMOM（金属-氧化层-金属-氧化层-金属），并在低频波段观察到了相干电磁振荡。
While in this paper, we use erbium-doped fibers with different concentration, make the group velocity slow down based on the coherent population oscillation (CPO).
在本文中，我们使用不同浓度的掺铒光纤传输系统，基于相干布居振荡（CPO）的原理，使光传播的群速度减慢。