Linear Birefringence and Linear Dichroism Coupled Optical Anisotropy of Magnetic Fluids by External Magnetic Fields

Shengli Pu, Min Dai, Guoqing Sun, Ming Liu
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引用次数: 12

Abstract

The optical anisotropy of magnetic fluids, including linear birefringence and linear dichroism simultaneously, under externally applied magnetic fields is investigated in this work. Analytical expressions to describe the polarization properties (direction of main polarization and degree of polarization) of the transmitted elliptically polarized light after the optically anisotropic magnetic fluids are obtained by theoretical derivation. Numerical examples are presented to examine the relationship between the polarization properties and the combined (coexistence of linear birefringence and linear dichroism) optical anisotropy. Applications to photonic devices based on the combined and "pure" (linear birefringence only) optical anisotropy are demonstrated. The notable discrepancy between the two cases at slightly high magnetic fields indicates that it is usually improper to ignore the linear dichroism for some applications.
外加磁场作用下磁流体的线性双折射和线性二色耦合光学各向异性
本文研究了外加磁场作用下磁流体的光学各向异性,包括线性双折射和线性二色性。通过理论推导,得到了经各向异性磁流体作用后透射椭圆偏振光的偏振特性(主偏振方向和偏振度)的解析表达式。通过数值算例分析了偏振特性与线性双折射和线性二色性共存的光学各向异性之间的关系。应用于光子器件基于组合和“纯”(线性双折射)光学各向异性。在稍高的磁场下,这两种情况之间的显著差异表明,在某些应用中,忽略线性二色性通常是不合适的。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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