各向异性球颗粒的古斯-汉森位移

Goos-Hnchen shift of spherical particles with radial anisotropy

从Lorenz-Mie散射理论出发,研究了平面波照射到各向异性球颗粒上出现的古斯-汉森(GH)位移。当颗粒半径较小时,电共振对GH位移有显著增强,其峰值随着各向异性电参数的变大而变小并且峰值位置向右移动;对于特殊的近零材料(εr近0),GH位移数值较大,且随着各向异性电参数的变大而变小,此时峰值位置向左移动。对各向异性球颗粒中GH位移的研究,将有利于各向异性材料在微波或光学系统中的应用。

Based on Lorenz-Mie theory,we investigated the Goos-Hanchen (GH)shift of spherical particles with radial anisotropy.When the radius of particles is small,the electrical resonance has a significant enhancement to the GH shifts,and its peak becomes smaller as the anisotropic electrical parameters increase,and the peak position shifts to the right.For a special epsilon-near-zero material,the GH shifts are large and decrease as the anisotropic parameters increase.Besides,its peak position shifts to the left.The study of GH shift in anisotropic spherical particles can facilitate the application of anisotropic materials in microwaves and optical systems.