密度矩阵理论 meaning in English
density matrix theory
Examples
- In the second chapter , the nonlinear optical properties are described from both macroscopic and microscopic views , at the same time , giving the definitions of the linear and nonlinear polarizabilities . then , the explicit expressions of the linear and nonlinear polarizabilities are obtained by using quantum mechanical perturbation theory and density matrix formalism , respectively
第二章非线性光学性质，首先分别从宏观和微观两个角度讨论了极化强度和电偶极矩与外加光电场强度之间的关系，同时给出了线性极化率和非线性超极化率的定义，然后分别运用含时微扰理论和密度矩阵理论求解了分子体系的线性极化率和非线性超极化率。 - The key components in laser gyro is he - ne ring laser , and the reciprocal action theory between light and medium is the base in studying the ring laser , use the lamb half classical theory , and on the base of density matrix theory , the optical brounch equation was established , which described the movement of amplifying medium atom in the ring syntonic cavity , and according to the medium polarize theory the self consistent equations was deduced , which describe the light intensity and phasic of the counter - propagating wave . on the basis of this equations , adopted the simulation software matlab and virtual instrument programming language labwindows / cvi , we can do some simulated experiments in study the phenomenas such as amplify and dispersive characteristic of medium , mode pushing effection , burned hole effection and pattern competition , lock - in of frequency and the characteristic of light intensity and phasic of the counter - propagating wave in laser gyro
激光陀螺的核心部件为he - ne环形激光器，而掌握光与介质的相互作用理论是研究激光器的关键，采用拉姆半经典理论为主，在密度矩阵理论的基础上，推导环形谐振腔中描述he - ne气体增益介质原子运动的光学布洛赫方程，运用介质极化理论得出描述激光陀螺反向行波的光强、位相所满足的自洽场方程组，在此基础上，运用matlab仿真软件和虚拟仪器编程语言labwindows / cvi ，对激光陀螺中的介质增益色散特性、频率牵引效应、烧孔效应及模竞争、闭锁效应及环激光的光强和相位特性进行仿真试验研究，并且运用全量子理论，对激光工作原理进行分析，得出二能级系统单模辐射场的光子数密度分布，得出激光场的光子统计分布，仿真激光场的动态建立过程。