粒子数反转

氪灯作为其泵浦源，作用是提供足够的能量使得YAG晶体保持处于粒子数反转的状态，为了让更多的光能汇聚到工作物质上，我们采用内表面镀有金膜的双椭圆形聚光腔。

As a pumping source , the role of krypton lamp is to provide sufficient energy keep YAG crystal in the population inversion state . In order to converging more energy to active material , double ellipse which inner surface coated with gold film is adopted .

我们可以用各种方法来实现这种必要的粒子数反转。

The necessary population inversion can be achieved in a variety of ways .

激光加热微管靶在软X射线波段观察很高的粒子数反转

High soft X-ray population inversion observed in a laser-irradiated micro-tube

水窗波段类氦Al离子2p-3dX射线激光的粒子数反转研究

A study on " water window " range 2p-3d population inversion of He-like AI ions X-ray laser

强驱动场近似下开放的V型系统中的无粒子数反转激光

Lasing Without Inversion in an Open V type Three level System under Strong Driving Field Approximation

粒子数反转超导机制下的Josephson效应

The Josephson effect of superconducting mechanism with an inverted population

互组合线共振光激发NaXI离子的粒子数反转研究

Soft X-ray population inversion of Na XI levels by inter-combination line resonant photoexcitation

本文用隧道哈密顿研究了具有粒子数反转机制超导体的Josephson效应。

The Josephson effect of superconducting mechanism with an inverted population has been examined by using the tunneling Hamiltonian .

粒子数反转超导体的Bogoliubov变换法

The Bogoliubov transformation method of superconductors with an inverted population

原子相干现象在很多方面都具有潜在的应用价值，而在众多的原子相干现象中，无粒子数反转激光（Lasingwithoutinversion简称LWI）引起了人们更大的兴趣和特别的重视。

In addition , Atomic coherence effects have multiple potential applications in many aspects . Among numerous phenomena of atom coherence , lasing without inversion ( LWI ) has received tremendous attention .

使用荧光染料作为增强介质，当SRS产生的Stokes辐射通过处于粒子数反转状态的荧光介质时，可以实现Stokes波的有效放大。

So when the Stokes waves serving as signal light traverse fluorescence medium with an inverted population , the Stokes waves will be increased just like the amplification of a laser beam in a laser gain medium .

无粒子数反转激光（Lasingwithoutinversion简称LWI）的研究是当前国际上激光物理重要而活跃的研究前沿领域之一，无粒子数反转激光的研究不仅具有重要的理论价值，而且具有广阔的应用前景。

The study of lasing without inversion ( LWI ) is an important and active research front field in international lasing physics nowadays . The study of LWI has not only an important theoretical value , but also wide application prospects .

本文报道利用激光感生荧光测量方法在纯氩直流空心阴极放电（HCD）中探测到Ar~+4p-4s态间存在粒子数反转，给出了实验数据，并作了相应解释。

Population inversion between Ar + 4p and 4s levels was detected in the direct current hollow cathode discharge ( HOD ) of pure argon by laser-induced fluorescence measurement . Experimental data were obtained and analysed .

四能级原子系统无粒子数反转受激光放大的研究

A Study of Lasing without Inversion on Four-level Atom System

无粒子数反转光放大的研究

Progress in the Investigation on Light Amplification without Population Inversion

用平均原子模型研究粒子数反转

Investigation of population inversions by average atom model

开放的三能级系统中无粒子数反转激光的非线性理论

The Nonlinear Theory of Lasing Without Inversion in an Open Simple Three level Atomic System

该系统能实现有粒子数反转激光到无粒子数反转激光的转变。

This system can exhibit the transition from lasing with inversion to lasing without inversion .

纯氩空心阴极放电中Ar~+4p-4s态的粒子数反转

Population inversion between Ar ~ + 4p and 4s levels in HCD of pure argon

压缩相干光场与有效二能级原子相互作用中粒子数反转的特性

Atom 's Particle Number Inversion Properties of Squeezed Coherent Field Interacting with Effective Two-Level Atom

分析了可能导致高温条件下粒子数反转的机制。

The possible mechanisms of population inversion under the average high temperature condition has been analysed .

强激发二能级原子双光子过程的粒子数反转

Atom 's Particle Number Inversion in the Two photon Process Under Strong Exciting of Coherent Field

化学激光器是以释能化学反应提供能源，并且以化学反应产生粒子数反转为基础的。

Chemical laser is characteristically energized by an exoergic chemical reaction which produces the necessary population inversion of lasing species .

本文用类氢离子速率方程计算高度电离条件下光学薄介质粒子数反转。

In this paper We use the rate equations for hydrogenlike ions to calculate population inversion for optically thin materials .

半导体Ⅱ-类量子阱中法诺态的结构和自发辐射对无粒子数反转光增益过程的作用

Effects of Structure of Fano States and Spontaneous Emission on Optical Gain Without Inversion in Type II Semiconductor Quantum Wells

提出了改进的平均粒子数反转度迭代算法来数值计算掺铒光纤放大器的增益和噪声系数。

The modified average population inversion iteration method is proposed for calculating the gain and noise figure of erbium-doped fiber amplifiers .

利用速率方程研究用光电泵浦类氢类氦离子产生粒子数反转的条件

The Study of Coditions for Population Inversions Resulted from Photoelectric Pumping Hydrogen like and Helium like Ions by Using the Rate Equatons

本文主要的探讨了无粒子数反转激光的物理机制，建议了一种封闭的四能级无反转激光模型，并证明它也能够呈现无粒子数反转光放大现象。

This thesis mainly discusses the physics mechanism of lasing without inversion and proposed a closed four-level atomic model for the lasing without inversion .

结果发现：电子温度的上升和自由电子密度的快速衰减都会影响体系粒子数反转的峰值和发生的区域。

The theoretical results shows that both the rise of temperature and the rapid reduction of the desity of electrons can affect population inversion density and its area .

这一发现提供了一种新的控制子带间散射速率（量子级联激光器的主要机制）的有效方法，使得在量子阱子带间实现粒子数反转变得更加容易。

The observed phenomenon may provide an effective method for controlling intersubband scattering rate , a central issue in so-called quantum cascade lasers , and facilitating the population inversion between subbands in quantum wells .