Coherent backscattering of electromagnetic waves in random media

被引：2

作者：

Sheikhan, A. ^{[1
]}

Maass, P. ^{[2
]}

Tabar, M. Reza Rahimi ^{[2
,3
]}

机构：

[1] Natl Inst Theoret Phys, ZA-7602 Matieland, South Africa

[2] Univ Osnabruck, Fachbereich Phys, D-49076 Osnabruck, Germany

[3] Sharif Univ Technol, Dept Phys, Tehran 113659161, Iran

来源：

EPL | 2012年 / 98卷 / 01期

关键词：

DISORDERED MEDIA; WEAK-LOCALIZATION; MULTIPLE-SCATTERING; ACOUSTIC-WAVES; LIGHT; FIELD;

D O I：

10.1209/0295-5075/98/14005

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The single and multiple scattering regimes of electromagnetic waves in a disordered system with fluctuating permittivity are studied by numerical simulations of Maxwell's equations. For an array of emitters and receivers in front of a medium with randomly varying dielectric constant, we calculate the backscattering matrix from the signal responses at all receiver points j to electromagnetic pulses generated at each emitter point i. We show that the statistical properties of the backscattering matrix are in agreement with the recent experimental results for ultrasonic waves (AUBRY A. and DERODE A., Phys. Rev. Lett., 102 (2009) 084301) and light (POPOFF S. M. et al., Phys. Rev. Lett., 104 (2010) 100601). In the multiple scattering regime the singular value distribution of the backscattering matrix obeys the quarter-circle law. Copyright (C) EPLA, 2012

引用

页数：5

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