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光相干    
相关语句
  optical coherent
    Applications of Optical Coherent Detection
    光相干探测的应用技术研究
短句来源
    A mathematical relation between DOP and DGD is derived based on optical coherent matrix.
    以光相干矩阵为基础推导了DOP与DGD和分光比之间的数学关系,对高斯脉冲的波形函数进行了计算。
短句来源
    Some application techniques of optical coherent detection are discussed in this paper.
    介绍了光相干探测在不同技术领域的应用。
短句来源
    It is explained by specific examples that adopting optical coherent detection technology, the capacity of communication can be enlarged in optical transmission, the detection sensitivity can be increased in optical sensors, and the performance can be improved in signal processing.
    通过各类具体实例讨论了光通信系统采用光相干探测技术可以增大通信容量,提高信号传输质量,光传感系统采用该技术可以提高信号探测灵敏度和发展多种多样的光传感模式,以及信号处理系统采用该技术可以改善信号处理性能。
短句来源
    Aimed at the scattering light signal's characters of Brillouin optical distributed sensor,a detecting scheme using optical coherent detection was developed.
    针对布里渊散射光信号特点,应用光相干技术来检测布里渊散射光信号。
短句来源
更多       
  optical coherent
    Applications of Optical Coherent Detection
    光相干探测的应用技术研究
短句来源
    A mathematical relation between DOP and DGD is derived based on optical coherent matrix.
    以光相干矩阵为基础推导了DOP与DGD和分光比之间的数学关系,对高斯脉冲的波形函数进行了计算。
短句来源
    Some application techniques of optical coherent detection are discussed in this paper.
    介绍了光相干探测在不同技术领域的应用。
短句来源
    It is explained by specific examples that adopting optical coherent detection technology, the capacity of communication can be enlarged in optical transmission, the detection sensitivity can be increased in optical sensors, and the performance can be improved in signal processing.
    通过各类具体实例讨论了光通信系统采用光相干探测技术可以增大通信容量,提高信号传输质量,光传感系统采用该技术可以提高信号探测灵敏度和发展多种多样的光传感模式,以及信号处理系统采用该技术可以改善信号处理性能。
短句来源
    Aimed at the scattering light signal's characters of Brillouin optical distributed sensor,a detecting scheme using optical coherent detection was developed.
    针对布里渊散射光信号特点,应用光相干技术来检测布里渊散射光信号。
短句来源
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  optical coherent
Multiple scattering and intensity fluctuations in optical coherent tomography of randomly inhomogeneous media
      
An expression for signal intensity fluctuations in optical coherent tomography has been obtained for the first time in the framework of the theory of the multiple scattering of low-coherent optical radiation in a random medium.
      
The contribution of the multiple scattering of low-coherent radiation backscattered from a randomly inhomogeneous layer, as well as the speckles of the interference component in optical coherent tomography, has been calculated.
      
We prove that a mesoscopic Josephson junction, irradiated with a quantum superposition of two -out of phase optical coherent states, exhibits an experimentally observable sensitivity to the quantum coherences of the field state.
      
Arbitrary superpositions of any two optical coherent states are investigated as realizations of qubits for quantum information processing.
      
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In this paper, recent advances in the research of coherence properties of electromagnetic radiation are discussed. Using the conception of photon degeneracy and degree of coherence the author is able to explain many problems such as light mixing, intensity fluctuations and the properties of coherent light source. Since the occurrence of radiation process is at random, the intensity of the signal generated by the mixing of different sources can be determined by the correlation of radiation processes as derived...

In this paper, recent advances in the research of coherence properties of electromagnetic radiation are discussed. Using the conception of photon degeneracy and degree of coherence the author is able to explain many problems such as light mixing, intensity fluctuations and the properties of coherent light source. Since the occurrence of radiation process is at random, the intensity of the signal generated by the mixing of different sources can be determined by the correlation of radiation processes as derived in the present paper. Regarding photons as bosons, the phenomena "intensity interferense" is explained as quantum fluctuations. The coherence properties of radiation may thus be interpreted well on the basic conception of quantum machanics.

本文的主要目的在综合评述近年来在光的相干性方面研究的成就。表明光子简并度和相干度等在有关问题中起重要作用,诸如干涉、拍频、强度起伏等。由于辐射过程的随机性质,拍频信号的强度由过程的相关度决定;由于光子是玻色子,这就决定了强度起伏中有相关项。从已有实验结果看来,光的相于性完全可从量子力学的基础概念得到解释。

This paper is the first part of a theory of the coherent propagation of light in semiconductors. When the interaction between electrons is neglected we obtain the Bloch equation describing the matrix elements of interband transitions induced by coherent light in semiconductors. The interband transitions in the system are analogous in form to those of an inhomogeneously broadened two-level system, but a particular type of multiphoton process will occur under the action of intense light.

本文是半导体中光的相干传播理论的第一部分。在不考虑电子-电子间的相互作用时,我们得到了相干光作用下描述半导体带间跃迁矩阵元满足的布洛赫方程。半导体的带间跃迁形式上可类比于一个非均匀展宽的二能级系统能级间的跃迁;但是在强光的作用下会有一种特殊的多光子过程发生。

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。

 
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