Raman Tensor Formalism for Optically Anisotropic Crystals

被引：70

作者：

Kranert, Christian ^{[1
]}

Sturm, Chris ^{[1
]}

Schmidt-Grund, Ruediger ^{[1
]}

Grundmann, Marius ^{[1
]}

机构：

[1] Univ Leipzig, Inst Expt Phys 2, Abt Halbleiterphys, Linnestr 5, D-04103 Leipzig, Germany

来源：

PHYSICAL REVIEW LETTERS | 2016年 / 116卷 / 12期

关键词：

SINGLE-CRYSTAL;

D O I：

10.1103/PhysRevLett.116.127401

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present a formalism for calculating the Raman scattering intensity dependent on the polarization configuration for optically anisotropic crystals. It can be applied to crystals of arbitrary orientation and crystal symmetry measured in normal incidence backscattering geometry. The classical Raman tensor formalism cannot be used for optically anisotropic materials due to birefringence causing the polarization within the crystal to be depth dependent. We show that in the limit of averaging over a sufficiently large scattering depth, the observed Raman intensities converge and can be described by an effective Raman tensor given here. Full agreement with experimental results for uniaxial and biaxial crystals is demonstrated.

引用

页数：5

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