Scattering of an unpolarized Bessel beam by spheres

• 来源期刊: 中国光学快报(英文版)
• 学科: 数学
• 关键词: 贝塞尔光束 散射场 非偏振 散射函数 数值模拟 无量纲 解析解 球形
• 年，卷（期）: 2010,（12）
• 所属期刊栏目: Scattering
• 页码范围: 1195-1198
• 页数: 4页
• 分类号: O175 TN241
• 语种: 英文

摘要

The scattering process of an unpolarized Bessel beam through spherical scatterers is investigated. We derive the analytical solutions of scattered fields of x-and y-polarized Bessel beams using a sphere, after which the dimensionless scattering function for an unpolarized Bessel beam is obtained. The dimensionless scattering function is applicable to spherical scatterers of any size on the beam axis or near it. Through numerical simulations, we demonstrate that extreme points exist in the direction or neighboring direction of the conical angle for spherical scatterers on the beam axis, whereas the existence of extreme points depends on the ratio between the spherical scatterers size and central spot size of the Bessel beam.