Coherent backscattering by polydisperse discrete random media: exact T-matrix results.
Coherent backscattering by polydisperse discrete random media: exact T-matrix results.
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DOI：
10.1364/ol.36.004350
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发表时间：
2011-11
期刊：
影响因子：
3.6
通讯作者：
M. Mishchenko;J. M. Dlugach;D. Mackowski
中科院分区：
文献类型：
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作者：
M. Mishchenko;J. M. Dlugach;D. Mackowski
数值精确叠加T-矩阵方法被用来计算，为第一次，我们的知识，电磁散射有限球体积组成的多分散混合物的球形颗粒具有不同的尺寸参数或不同的折射率。在多分散多粒子体积的远场区中计算的后向散射图案明确地揭示了离散随机介质中电磁波弱局部化效应的经典表现，从而证实了相干后向散射的普遍干涉性质。偏振反对的效果示出的弱本地化随着颗粒尺寸参数的增加逐渐消失的最不稳健的表现。
The numerically exact superposition T-matrix method is used to compute, for the first time to our knowledge, electromagnetic scattering by finite spherical volumes composed of polydisperse mixtures of spherical particles with different size parameters or different refractive indices. The backscattering patterns calculated in the far-field zone of the polydisperse multiparticle volumes reveal unequivocally the classical manifestations of the effect of weak localization of electromagnetic waves in discrete random media, thereby corroborating the universal interference nature of coherent backscattering. The polarization opposition effect is shown to be the least robust manifestation of weak localization fading away with increasing particle size parameter.