1) distribution for population inversion
![点击朗读](/dictall/images/read.gif)
粒子数反转分布
2) population inversion
![点击朗读](/dictall/images/read.gif)
反转粒子数
1.
In this paper we start from the rate equations describing a Q switched laser system with a saturable absorber and finally deduce the condition of this kind of Q switching which should be satisfied by the laser crystal population inversion.
本文从描述饱和吸收体调Q的速率方程出发,推导实现有激发态吸收的饱和吸收体调Q所需的反转粒子数理论上应满足的条件,并对其进行讨论与分析。
2.
The condition of this kind of Q-switching which should be satisfied by the laser crystal population inversion is deduced.
从描述饱和吸收体调Q的速率方程出发,推导出了实现有激发态吸收的饱和吸收体调Q所需的反转粒子数理论上应满足的条件,并对其进行了讨论与分析,与参考文献的相关叙述相符。
3.
The extraction efficiency and the distribution of population inversion in multi pass amplifier are calculated theoretically.
理论上计算了在多程放大过程中反转粒子数的利用效率、反转粒子数的分布等。
3) population inversion
![点击朗读](/dictall/images/read.gif)
粒子数反转
1.
Based on boltzmann distribution law,thermodynamic scale of temperature is discussed of three level laser working matter system in negative temperature state,realized population inversion.
从玻耳兹曼发布律出发,对处于负温度状态(即实现粒子数反转)的三能级激光工作物质系统的热力学温度进行了讨论,指出在负温度状态下,粒子系统的热力学温度仍可以大于零,证明了负温度状态并不等同于热力学温度T<0的状态。
2.
94 μm, but only changes the relation between the population inversion of 4I 13/2 and 4I 15/2 levels and the concentration of Er 3+ ions.
66μm波长激光粒子数反转,即N2(4I13/2)>N1(4I15/2)与Er3+离子浓度的关系。
3.
The evolution properties of the field entropy and the population inversion in an interacting system of a coherent superposition state and a two-level atom are studied and compared with that of the coherent superposition state formed by the coherent state and vacuum state.
研究了压缩相干态和真空态构成的相干叠加态光场与二能级原子相互作用系统中场熵的演化特性及粒子数反转效应,并与相干态和真空态构成的相干叠加态光场的场熵特性及粒子数反转效应进行了比较。
4) population distribution
![点击朗读](/dictall/images/read.gif)
粒子数分布
1.
The simulation results show that there is a gain competitive process among multi-channels which relied on the energy state population distribution of EDTFA.
仿真结果表明:EDTFA多信道间的增益存在着一个竞争过程,竞争的强弱取决于碲基掺铒光纤内的能级粒子数分布;当上能级粒子数处于反转分布态时,具有较大的发射截面与吸收截面差值的波长信道拥有相对较大的竞争优势,可获得相对较高的信号增益;当上能级粒子数处于未反转分布态时,具有较大的发射截面与吸收截面比值的波长信道拥有相对较大的增益竞争优势。
2.
Based on the rate equations and light propagation equations,the model of Er 3+/Yb 3+ co-doped double clad fiber amplifiers has been discussed,and the population distribution characteristics of Er 3+ upper level in Er 3+/Yb 3+ co-doped double clad fiber amplifier pumped at 980nm bands have been analyzed by using the results of numerical simulation.
分别给出了正向抽运和反向抽运条件下 ,Er3 + 归一化上能级粒子数分布曲线。
5) without inversion
![点击朗读](/dictall/images/read.gif)
无粒子数反转
1.
The laser amplication four-level atom system without inversion is studied.
![点击朗读](/dictall/images/read.gif)
对于小信号探测利用计算机给出吸收、增益曲线,并计算出无粒子数反转光放大的阈值条件。
2.
By using the density matrix equations motion of the system,the conditions for realizing the probe fields gain without inversion in the system are discussed.
研究了三能级原子与多模光场相互作用的量子系统,从系统的密度矩阵运动方程出发讨论了无粒子数反转探测场的增益条件,发现当驱动场拉比频率取5,探测场拉比频率取1,非相干抽运取3,驱动场失谐量取3时,系统可以在偏离共振的两端获得粒子数无反转而相应的探测场获得了增益,即实现了无粒子数反转激光,其在光通信方面具有重要的应用价值。
6) population inversion ratio
![点击朗读](/dictall/images/read.gif)
粒子数反转比
1.
The theoretical studies of the upper state population inversion ratio for erbium-doped tellurite-based fiber amplifier(EDTFA) are presented, and its distribution curves with the activated fiber length, each channel signal input power, bi-directional pumping power and erbium-doped concentration, respectively, are also obtained.
对宽带碲基掺铒光纤放大器(EDTFA)上能级粒子数反转比进行了理论研究,得到了碲基掺铒光纤 放大器上能级粒子数反转比随着光纤激活长度、信号输入功率、泵浦功率和纤芯掺杂浓度的演变关系,分析了 上能级粒子数反转比分布与EDTFA信号增益间的关系。
补充资料:布居数反转
分子式:
CAS号:
性质: 又称粒子数反转或布居倒转。在一系统中发生原子能级的再分布,以致产生激光作用。正常情况下,一组原子处于温度平衡体系之中时,处于低能态的原子总是多于高能态的。但是能量的吸收与发射是一种连续过程,不同能态原子的统计分布(布居)保持不变。当抽运能量使这系统受到激励时,分布受到扰动,会出现粒子数反转:高能态的原子数(亦即布居数)比低能态的多。
CAS号:
性质: 又称粒子数反转或布居倒转。在一系统中发生原子能级的再分布,以致产生激光作用。正常情况下,一组原子处于温度平衡体系之中时,处于低能态的原子总是多于高能态的。但是能量的吸收与发射是一种连续过程,不同能态原子的统计分布(布居)保持不变。当抽运能量使这系统受到激励时,分布受到扰动,会出现粒子数反转:高能态的原子数(亦即布居数)比低能态的多。
说明:补充资料仅用于学习参考,请勿用于其它任何用途。
参考词条