ABSTRACT Light scattering from small anisotropic particles has important interests in the applications of meteorology, oceanography, communication, and nanotechnology. In this paper, the light scattering from uniaxial and biaxial small particles is investigated using the anisotropy formulation based on the finite-difference time-domain (FDTD) method, although this method has been used to analyse the isotropic particles. The obtained light scattering solutions from the isotropic small particle using the FDTD method are compared with the exact solutions obtained by Mie theory. The effects of the anisotropy and the rotation of optical axes on the light scattering are also investigated. Numerical results show that the distribution of scattered light is strongly affected by the anisotropy of the particles. Therefore, the anisotropy of the scattering particles is an important factor in several applications such as free-space optical communications.

中文翻译：

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使用 FDTD 方法分析各向异性粒子的光散射

摘要 小各向异性粒子的光散射在气象学、海洋学、通信和纳米技术的应用中具有重要意义。在本文中，使用基于时域有限差分 (FDTD) 方法的各向异性公式研究了单轴和双轴小颗粒的光散射，尽管该方法已用于分析各向同性颗粒。将使用 FDTD 方法从各向同性小粒子获得的光散射解与 Mie 理论获得的精确解进行比较。还研究了各向异性和光轴旋转对光散射的影响。数值结果表明，散射光的分布受颗粒各向异性的影响很大。所以，