查询词典 spontaneous emission

The spontaneous emission of a four-level atom embedded in a one-dimensional photonic crystal is investigated.

本文研究了处于各向同性的一维光子晶体中的单个四能级原子的自发发射性质。

The system consists of an amplified spontaneous emission broadband light source, a photo detector and the signal processing subsystem.

该系统包括一个放大的自发辐射的宽带光源，光电检测器和信号处理子系统。

Significant progress has been made by Dalibard,Dupont-Roc and Cohen-Tannoudji in 1982,who argued that there exists a symmetric operator ordering between the operators of atom and field that renders the distinct contributions of vacuum fluctuations and radiation reaction to the atom\'s spontaneous emission and energy shift separately Hermitian.

这种不确定性的根源来自于相互作用哈密顿量中原子和场算符的排序问题。1982年，法国物理学家Dalibard，Dupont-Roc和Cohen-Tannoudji提出原子和场算符对称排序的方法，从而消除了这种不确定性，使得真空涨落和辐射反作用对原子自发辐射和能级移动的贡献都是厄米的。

At the same time,Sun yikui laid claim to tonify kidney to arrest spontaneous emission and

他深知脾与肾相互资生，互相促进，因此治疗时也不忘脾肾同治。

The unflatness of amplified spontaneous emission noise and its impacts imposed on the performance of the off-center narrow filter polarization-nulling method when monitoring the in-band optical signal-to-noise ratio of dense wavelength division multiplexing system are analyzed, and a modified method by introducing an unflat factor in the calculation of OSNR is proposed.

分析了累积自发辐射噪声的非平坦特性，在已有窄带离心偏振置零法测量波分复用系统中带内光信噪比的基础上，分析该方法在噪声非平坦条件下存在的问题，提出了在光信噪比的计算中引入修正因子。

In addition, the control of spontaneous emission of a three-level atom embedded in photonic crystals was investigated in this paper,because the model of two-level atom is siple.

二能级毕竟是最简单的模型，故在最后，还对光子晶体中三能级原子的自发辐射特性进行了研究。

This character of the photonic crystal containing defect can be used to enhance spontaneous emission of atoms and to make narrow band filter.

为了能对光子晶体进行数值计算，人们一直不遗余力的在寻求新的计算方法。

The spontaneous emission spectrum of a novel wiggler with its magnetostatic-fiele indepen dent of the axialcoordinate is calculated by means of generalized Bessel functions,and the re sult is analysed.

利用广义Bessel函数计算出了ShlomoPinhas提出的磁场与纵向坐标无关的摆动器的自发辐射谱，并对结果进行了分析。

The phonon spontaneous emission causes the decoherence of the qubit. We discussed the relatoion between the decoherence time and the Coulomb binding parameter,the couping strength, the confinement length, and the conefficient dispersion.

由于声子的自发辐射，造成量子比特的消相干，讨论了消相干时间与库仑结合参数，耦合强度，受限长度，色散系数的变化关系。

Two-dimensional photonic crystal possess only pseudo photonic band gaps, so it is interesting and meaningful that whether the spontaneous emission of the atoms in two-dimensional photonic crystals can be controlled effectively.

二维光子晶体只有赝带隙，因此能否利用二维光子晶体有效控制原子自发辐射是令人感兴趣也是有实际意义的问题。

The shaping method of noncircular part and the tool holder's radial motion characters in noncircular turning process are discussed in detail in the thesis.

论文详细研究了非圆零件的成型方法和加工过程中刀架的径向运动规律。

I have not really liked him,I do not like his this kind of disposition.

我没有真的喜欢他，我不喜欢他的这种性格。