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population inversion density
相关语句
  反转粒子数密度
     For passive Q switched solid state lasers including excite state absorption (ESA), the coupled rate equations is presented. By means of the adiabatic elimination approximation (AEA) and the Hopf bifurcation conditions, the series of multi pulses produced by passive Q switch correspond to the limit cycle on the phase plane of optic intensity and population inversion density. Threshold formula for giant pulses and analytical solution for pulses period or repetitive frequency are obtained.
     针对存在激发态吸收 (ESA)的被动式调Q激光器 ,采用绝热近似 (AEA)方法和微分方程的Hopf分岔条件 ,将被动调Q产生的多脉冲序列与由光强和反转粒子数密度所构成相平面上的极限环运动对应起来 ,得到了产生Q脉冲阈值的定量关系式和表示脉冲周期 (重复频率 )的解析解。
短句来源
     Through soluting the population inversion density , the relationship between a certain output pulse energy and cavity loss,the necessary minimum diffraction efficiency of Q-switch , the reflectivity of output mirror and so on,are acquired.
     通过对调Q反转粒子数密度的求解,获得了调Q激光器输出的一定脉冲能量与腔内损耗、所需最小Q开关的衍射效率和输出镜的反射率等的关系公式.
短句来源
  “population inversion density”译为未确定词的双语例句
     4. The intracavity photon density and initial population inversion density are assumed to be Gaussian distributions instead of plan wave assumption, based on this assumption, the rate equations of diode-pumped intracavity-frequency-doubled passively Q-switched laser are modified.
     4.将腔内光子密度和初始反转粒子数的平面波近似修正为高斯分布近似,独立地导出描述二极管泵浦内腔倍频-被动调Q激光器的速率方程,并通过数值求解该方程比较了两种近似下脉冲特性的不同;
短句来源
     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.
     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。
短句来源
     Using rate equation theory,the equation group including the population inversion density of the gain medium,photon density and the absorber ground state population density is acquired.
     利用速率方程理论,得到包含激光增益介质反转密度、光子密度和饱和吸收介质基态布居数密度的速率方程组。
短句来源
     For passive Q-switched solid-state lasers including excite state absorption (ESA), the coupled rate equations is presented. By means of the adiabatic elimination approximation (AEA) and the Hopf bifurcation conditions, the series of multi-pulses produced by padre Q-switch correspond to the limit cycle on the phase plane of optic intensity and population inversion density. Threshold formula for giant pulses and analytical solution for pulses period or repetitive frequency are obtained.
     针对存在激发态吸收(ESA)的被动式调Q激光器,采用绝热近似(AEA)方法和微分方程的Hopf分岔条件,将被动调Q产生的多脉冲序列与由光强和反转粒子效密度所构成相平面上的极限环运动对应起来,得到了产生Q脉冲阈值的定量关系式和表示脉冲周期(重复频率)的解析解。
  相似匹配句对
     And the performance of population inversion of the composite 180?
     并且用数值计算方法对该组合180°脉冲的布居数反转效果进行了分析。
短句来源
     The ratio of population inversion is 0.44.
     得到粒子数的反转比为0.44。
短句来源
     ⑤population;
     ⑤人口的变化;
短句来源
     On inversion and Emqhasis
     谈倒装与强调
短句来源
     Population 436
     绝命人口436
短句来源
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Using the model of recombination pumping X-ray laser, we calculate and analyse relationship between population inversion, gain of x-ray laser in Ne-like Cu and parameters of plasma from four-level energy rate equations. 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.In addition, the results also show that it is impossible to occur to population inversion beyond the certain...

Using the model of recombination pumping X-ray laser, we calculate and analyse relationship between population inversion, gain of x-ray laser in Ne-like Cu and parameters of plasma from four-level energy rate equations. 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.In addition, the results also show that it is impossible to occur to population inversion beyond the certain range of plasma density.

采用等离子体复合抽运x射线激光模型,本文从四能级速率方程出发,计算了铜的类氖离子2p~6、2p~53s、2p~53p能级上的粒子数分布、反转、x激光增益系数与等离子体参数的关系。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。另外,理论结果也表明:在等离子体过高、过低的密度区域都不可能使3s-3p态能级间发生粒子数反转。

For passive Q switched solid state lasers including excite state absorption (ESA), the coupled rate equations is presented. By means of the adiabatic elimination approximation (AEA) and the Hopf bifurcation conditions, the series of multi pulses produced by passive Q switch correspond to the limit cycle on the phase plane of optic intensity and population inversion density. Threshold formula for giant pulses and analytical solution for pulses period or repetitive frequency are obtained. The phenomena...

For passive Q switched solid state lasers including excite state absorption (ESA), the coupled rate equations is presented. By means of the adiabatic elimination approximation (AEA) and the Hopf bifurcation conditions, the series of multi pulses produced by passive Q switch correspond to the limit cycle on the phase plane of optic intensity and population inversion density. Threshold formula for giant pulses and analytical solution for pulses period or repetitive frequency are obtained. The phenomena about Cr 4+ ∶YAG saturable absorber Q switched laser are explained. The calculated results accord with the experiment.

针对存在激发态吸收 (ESA)的被动式调Q激光器 ,采用绝热近似 (AEA)方法和微分方程的Hopf分岔条件 ,将被动调Q产生的多脉冲序列与由光强和反转粒子数密度所构成相平面上的极限环运动对应起来 ,得到了产生Q脉冲阈值的定量关系式和表示脉冲周期 (重复频率 )的解析解。解释了Cr4 + ∶YAG调Q激光器的有关现象 ,获得了与有关实验相一致的结果。

A four-level system is analyzed as an example,and the necessary minimum diffraction efficiency of acoustooptical Q-switched laser in a certain output pulse energy is studied. Through soluting the population inversion density , the relationship between a certain output pulse energy and cavity loss,the necessary minimum diffraction efficiency of Q-switch , the reflectivity of output mirror and so on,are acquired. The result can be used to design the diffraction efficiency of acoustooptical Q-switched laser....

A four-level system is analyzed as an example,and the necessary minimum diffraction efficiency of acoustooptical Q-switched laser in a certain output pulse energy is studied. Through soluting the population inversion density , the relationship between a certain output pulse energy and cavity loss,the necessary minimum diffraction efficiency of Q-switch , the reflectivity of output mirror and so on,are acquired. The result can be used to design the diffraction efficiency of acoustooptical Q-switched laser.

以四能级系统为例,研究了在输出脉冲能量一定的情况下,声光调Q激光器所需要的最小衍射效率如何确定的问题.通过对调Q反转粒子数密度的求解,获得了调Q激光器输出的一定脉冲能量与腔内损耗、所需最小Q开关的衍射效率和输出镜的反射率等的关系公式.这一结果为声光调Q激光器Q开关衍射效率的设计提供了简便的估算方法.

 
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