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相干激发
相关语句
  coherent excitation
     Atomic dispersion depends on the squeezing direction and coherent excitation direction of the driving field.
     而原子的色散行为明显依赖于光场起伏的压缩方向与振幅的相干激发方向。
短句来源
     The positions of the side peaks and the character of symmetry of radiation spectrum depend upon the coherent excitation direction and the squeezing direction of the driving field.
     它的边峰在任意情况下都被展宽,而且当光场起伏的压缩方向与光场振幅的相干激发方向不平行或不垂直时,辐射光谱均呈现不对称分布。
短句来源
     Supernarrow resonant effect of coherent excitation atoms using mode-locked laser
     锁模激光相干激发原子的超窄共振效应
短句来源
     The coherent excitation property of a two-level atom with a hyperfine structure in narrow band laser field
     窄带激光与能级具有超精细结构的二能级原子的相干激发
短句来源
     In this paper coherent excitation of two-photon resonance in three-level systems is discussed.
     本文研究了双光子共振相干激发三能级系统的问题。
短句来源
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  “相干激发”译为未确定词的双语例句
     THE METHOD OF DESIGNING PULSE SEQUENCES FOR EXCITING MULTIPLE - QUANTU COHERENCES
     多量子相干激发脉冲序列的设计方法
短句来源
     meanwhile it excites coherently the elementary excitations of the crystal, the latter scatter the SHG into Stokes and antistokes radiations resulting in a complex effect of x(2) and x(3) nonlinear optical process.
     另一方面又在晶体形成激元的相干激发,后者对倍频光散射而得到一阶以及高阶的斯托克斯辐射和反斯托克斯辐射,这是二阶与三阶非线性光学过程的综合效应.
短句来源
     Besides,the source can shoot interferentially to enhance the source wavelet quality.
     此外,该震源还可以相干激发,改善震源子波品质,提高震源的地层分辨率。
短句来源
     A new method of designing MQ excitation pulse-sequences with high efficiency and coherences of the highest order Pmax = N , where N is the total spin number, is proposed. According to the different spin coupling networks, the pulse sequences were designed by the bilinear rotation pulses as basic excitation elements. The relations between the pulse sequences and the spin coupling networks were established and can be applied to the simplification of complex spectra and confirmation of coupling networks.
     提出了一种设计多量子相干激发脉冲序列的新方法,用双线旋转脉冲作为基本激发单元,按照自旋偶合网络构建脉冲序列,达到(一)满自旋数激发,P_(max)=N,(二)处于最佳转移条件下的高效率激发。
短句来源
     Above phenomena mean that the coherent vibration modes can be excited by stimuli of certain doses of He-Ne laser and non-linear dynamical interactions within biological cells.
     上述现象表明了一定剂量的He—Ne激光的刺激作用,生物细胞内非线性动力学因素可能激发其内部存在的相干激发振动模式。
短句来源
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  相似匹配句对
     Displaced and Excited Even and Odd Coherent States
     平移激发奇偶相干
短句来源
     Statistic Properties of the Excited Even and Odd q-Coherent States
     激发奇偶q相干态的统计性质
短句来源
     Fostering Innovation and Creativity among Employees in Workplace
     激发创造性
     Odd-even Coherent State of q-
     q——奇偶相干
短句来源
     The Coherent Effect of Bioohotons
     生物光子的相干效应
短句来源
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  coherent excitation
Characteristics of the coherent excitation of an impurity atom in a photonic crystal
      
A system possessing a bistable response to coherent excitation is studied.
      
Possibility of precision experimental verification of time retardation in moving clocks by using coherent excitation of relativi
      
Experiments with coherent excitation of relativistic nuclei in a crystal are proposed to investigate Lorentz time retardation.
      
Femtosecond dephasing of coherent excitation and ultrafast switching of resonant optical nonlinearity of molecular aggregates
      
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This paper is the second part of a theory of the coherent propagation of light wave in semiconductors. After considering the interaction between electrons, the problem of a semiconductor interacting with light is discussed and the equation of exciton polarization wave excited by light wave is obtained. We point out that the equation can be approximated by a set of linear ones and the exciton polarization wave can be regarded as a Bose field only in the limit of low excitation. In this paper, the problem of coherent...

This paper is the second part of a theory of the coherent propagation of light wave in semiconductors. After considering the interaction between electrons, the problem of a semiconductor interacting with light is discussed and the equation of exciton polarization wave excited by light wave is obtained. We point out that the equation can be approximated by a set of linear ones and the exciton polarization wave can be regarded as a Bose field only in the limit of low excitation. In this paper, the problem of coherent excitation of discrete exciton level is also discussed specifically. It is shown that the discrete exciton level system excited coherently is approximately equivalent to a two-level atom system excited by light wave in which the difference of energy level is dependent on the degree of excitation and the density of equivalent "two-level atoms'' is determined by features of the exciton state wave function.

本文是关于半导体中光的相干传播理论的第二部分。考虑到电子空穴间的相互作用,我们讨论了光波与半导体的相互作用,得到了描述光激发电子空穴极化波的方程。我们指出只有在激发比较弱时,这组方程才可近似为一组线性方程,电子空穴极化波才可以看作玻色场。本文还着重讨论了分立的激子谱线的相干激发,证明了它可以近似等效于一个二能级系统的激发,等效的二能级系统的能级差和激发的程度有关,等效的二能级“原子”的“浓度”由激子波函数的性质决定。

By pumping a LiIO3 crystal with 1.06μm picosecond laser pulses train at a proper incident angle, 8 stimulated Raman scattering lines have been obtained at the visible region from 4896 A to 6119A:ω=2ω1±nωP, n = 1, 2, 3, concerned elementary excitations being LO mode and TO mode of (A+E1) oblique polariton in the crystal. The process of such a complex stimulated Raman scattering is as following: with phase matching intense 1.06?m laser beam and its scattering light generate SHG in the crystal;meanwhile it excites...

By pumping a LiIO3 crystal with 1.06μm picosecond laser pulses train at a proper incident angle, 8 stimulated Raman scattering lines have been obtained at the visible region from 4896 A to 6119A:ω=2ω1±nωP, n = 1, 2, 3, concerned elementary excitations being LO mode and TO mode of (A+E1) oblique polariton in the crystal. The process of such a complex stimulated Raman scattering is as following: with phase matching intense 1.06?m laser beam and its scattering light generate SHG in the crystal;meanwhile it excites coherently the elementary excitations of the crystal, the latter scatter the SHG into Stokes and antistokes radiations resulting in a complex effect of x(2) and x(3) nonlinear optical process. Furthermore the reflected ward stimulated Raman scattering with distinct wavelength has been observed from the forward one. Present paper shows that the reflectedward scattering is also the SHG coherent Raman mixing but generated by the 1.06μm beam reflected upon the exit crystal surface.

用1.06μm微微秒激光脉冲序列按一定角度激励LiIO_3晶体,在4896~6119(?)可见光区内获得8种波长相干喇曼混频辐射,这个复杂受激喇曼散射过程可解释为:在满足位相匹配的条件下,1.06μm强光束一方面与其散射光按非共线型产生二次谐波;另一方面又在晶体形成激元的相干激发,后者对倍频光散射而得到一阶以及高阶的斯托克斯辐射和反斯托克斯辐射,这是二阶与三阶非线性光学过程的综合效应.此外,我们观察到反向的受激散射,其光谱成分与正向的成分不同.并证明,与普通的后向散射也不同,它是1.06μm入射光在晶体出射端面的反射光所产生的谐波相干喇曼混频.

In this paper coherent excitation of two-photon resonance in three-level systems is discussed. Under the condition of two ultrashort pulses with the same waveform, analytical solution of Blochequations of two-photon resonance, level-population and expression of excitation rate in three-level systems have been derived. Conditions for full inversion of population and maximal excitation rate have been obtained. With average-field approximation, analytical solutions of Bloch equations of two-photon off-resonance...

In this paper coherent excitation of two-photon resonance in three-level systems is discussed. Under the condition of two ultrashort pulses with the same waveform, analytical solution of Blochequations of two-photon resonance, level-population and expression of excitation rate in three-level systems have been derived. Conditions for full inversion of population and maximal excitation rate have been obtained. With average-field approximation, analytical solutions of Bloch equations of two-photon off-resonance have been obtained. The analytical expression of isotope coherent selective excitation coefficient has been deduced. Theoretical calculations show that the coherent excitation of two-photon resonance has a very high isotopic selectivity.

本文研究了双光子共振相干激发三能级系统的问题。在两个超短激光脉冲具有相同波形的条件下,求出了双光子共振三能级系统的布洛赫(Bloch)方程组的解析解,求出了三能级系统能级集居数及激发速率的表示式,获得了粒子数完全反转以及获得最大激发速率的条件。采用平均场近似,求出了双光子离共振布洛赫方程组的解析解,导出了同位素相干选择激发系数的解析表达式,理论计算证明双光子共振相干激发具有很高的同位素选择性。

 
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