Correlations between intensity fluctuations in stochastic electromagnetic Gaussian Schell-model beams
Correlations between intensity fluctuations in stochastic electromagnetic Gaussian Schell-model beams
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DOI：
10.1016/j.optcom.2013.11.036
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发表时间：
2014-04
影响因子：
2.4
通讯作者：
Yajun Li
中科院分区：
文献类型：
--
作者：
Yajun Li
最近关于光学频率下Hanbury Brown-Twiss效应的矢量理论的研究表明，需要一个新的统计量--交叉偏振度来预测随机电磁光束中强度起伏之间的相关性。本文研究了随机电磁高斯-谢尔模型（GSM）光束的交叉偏振度的变化规律，并比较了光束的相干度分布和光强起伏之间的相关性。分析导致的标量理论的程度的全球一致性，描述的GSM源，产生的电磁GSM光束的空间非常相干或空间非常不相干的全球意义上的概括。
Recent researches about the vector theory of the Hanbury Brown–Twiss effect at optical frequencies have shown that a new statistical quantity, called the degree of cross-polarization, is needed to predict the correlations between intensity fluctuations in stochastic electromagnetic beams. This note is devoted to an investigation of the variations of the degree of cross-polarization and then to a comparison of the distributions of degree of coherence and the correlations between intensity fluctuations across the cross-section of stochastic electromagnetic Gaussian Schell-model (GSM) beams. Analysis leads to a generalization of scalar theory of the degree of global coherence that describes the GSM sources that generate the electromagnetic GSM beams of either spatially very coherent or spatially very incoherent in the global sense.