The rate equation formalism is used to develop the concepts of laser threshold, population inversion and modulation response. 比例方程式形式用来生成雷射临界点、能态数反转与调变反应的概念。
The laser threshold decreases with increasing the reflectivity of output FBG. 结果表明激光阈值随输出光纤光栅反射率的增加而减小。
The effects of device temperature on the laser threshold current, external differential quantum efficiency ( DQE), and output wavelength are also investigated. 研究了器件温度对于激光阈值电流、外微分量子效率和输出波长的影响。
Experimental research of central wavelength of phosphate laser glass based on laser threshold value method 激光阈值法测量磷酸盐钕玻璃片中心波长的研究
Nano-silicon Powder Produced by LICVD and Study of Laser Threshold Limit Value The results show that the Monte Carlo can simulate the photon detection efficiency of data in the precision of 1%-3%. LICVD法纳米硅粉的制备及激光能量阈值研究结果表明在从探测器光子能量阈值直到BES上可产生的最大光子能量范围内,用目前的MonteCarlo可以在1%&3%的精度下模拟光子的探测效率。
With the increase of the pump area, the laser threshold is decreased. 随着泵浦光面积的增加,随机激光器阈值降低;
The difference between laser threshold and the working mechanism of "phonon laser" in MAT is discussed, and the analogy between the two in basic principle is emphasised. 分折了马氏体相变的声Laser工作机理和激光阈的差别,并指出二者的基本原理一致。
The Effect of Thin Mezzanine Thickness on Laser Threshold Value and T_0 in 1. 3 μ m InGaAsp/ InP DCC Structure 3μmInGaAsp/InpDCC结构薄夹层厚度对激光器阈值和T0值的影响
Influence of energy-transfer up-conversion on Tm, Ho: YLF laser threshold 能量传递上转换对Tm,Ho:YLF激光器阈值的影响
In this article a He-Cd laser operating in a nonuniform magnetic field is reported 100 milliwatts at 4416 A is obtained, which is 40% higher than that obtained without magnetic field In the vicinity of laser threshold, the power increase is up to 100%. 本文报导氦-镉激光运转在不均匀磁场中,获得4416埃激光100毫瓦功率输出,比零磁场下增加40%以上。
The relations between laser threshold and laser designing parameters are derived. The dependence of energy transfer up-conversion on the laser designing parameters is analyzed in detail. 给出了阈值与激光器设计参数的关系,并分析了能量传递上转换对激光器设计参数的依赖关系。
It is indicated experimentally that the efficiency of single pulse can be increased by a factor of 20% and the laser threshold can be kept unchanged, provided the laser wavelength radiation in pump light source is filtered. 实验表明,只要滤掉泵浦光源中激光波长辐射,单脉冲效率就可提高20%,且激光器的阀值保持不变。
The relationship among the laser threshold, the output intensity profile and the pumping fields has been studied experimentally. 实验研究了激光器的阈值和激光器输出的光强分布与泵浦光场之间的关系。
Study of the C → A transition excimer laser threshold condition C→A跃迁准分子激光阈值条件的研究
Based on the energy transfer between ions and the transition between energy levels of diode-end-pumped Tm, Ho: YLF laser, under the consideration of energy transfer up-conversion, the threshold rate equations are given, and the analytical formulas of laser threshold are deduced from rate-equations. 根据激光二极管纵向抽运Tm,Ho:YLF激光器的能级跃迁和能量传递过程,在考虑能量传递上转换的情况下,建立了准三能级阈值速率方程,得出了激光器阈值的解析解。
By use of rate equations, we have analyzed the effect ot laser wavelength radiation in pump light source on excited state population accumulation of laser medium and laser threshold. 本文用速率方程分析了泵浦光源中激光波长辐射对激光介质激发态粒子数积累和激光器阀值的影响情况。
Theoretical analysis for Ho laser threshold Ho激光器阈值的理论分析
Both high concentration Erbium-doped fiber and 1480 nm pump laser diode ( LD) were used to depress the laser threshold pump power and to increase the slope efficiency. 由于同时采用了高浓度掺铒光纤和1480nm激光二极管(LD)抽运源,极大地降低了激光器的抽运阈值,提高了斜率效率和输出功率。
The laser threshold conditions of the optical bistable system with pumping 带泵浦的光双稳系统的激光阈值条件
Based on laser threshold value method, central wavelengths of two kinds of phosphate laser glass used in high-power solid-state laser segment amplifiers are tested. 利用激光阈值法对两种应用于高功率固体激光片状放大器中的磷酸盐激光玻璃的中心波长进行了实验测试。
Study of low gain excimer laser threshold and optimum transmission 低增益准分子激光阈值和最佳透射率的研究
Especially, the influences of pumping and oscillating spot size to output power and laser threshold with different gain medium are deduced. 通过数值计算了泵浦光斑和振荡光斑大小对输出功率和振荡阈值功率的影响,并与Nd:YVO4和Nd:YAG晶体进行了比较。
Influence of lineshape on laser threshold 线型对激光忔值的影响
This provides the subsequent chapters direction for the design of the laser resonator. In the study of photonic crystal vertical cavity surface emitting lasers, we work in two aspects: the control of photonic crystal in the laser mode and the reducing of the laser threshold. 对于光子晶体垂直腔面发射激光器的研究,本文是从两个方面进行的:一是光子晶体结构对激光模式的控制;另外一个方面是光子晶体的引入对激光阈值的影响。
Secondly, this article combine the gain model which is based on the structure of four energy levels with cholesteric liquid crystal and put forward a simple method to observe the laser threshold of cholesteric liquid crystal laser model. 其次,本文还将基于四能级结构的增益模型与胆固醇液晶紧密的联系在一起,提出了一种可以简便观察胆固醇液晶激光器模型激光阈值的方法。
Compared with semiconductor laser, there are lots of advantages for fiber laser: smaller in size, wider tuning range, better monochromatic, more laser output spectrum, lower laser threshold, and higher efficiency. 光纤激光器相对于半导体激光器具有以下特点:器件占用空间小,调谐范围宽,单色性好,激光输出谱线多,激光阈值低,转换效率高。
The distributed feedback ( DFB) structure is considered to be the most beneficial to reduce the laser threshold. 而分布反馈结构被认为是最有利于降低激光阈值的器件结构。