摘要
基于偏心球微粒对任意入射波束的散射以及离轴入射高斯波束对偏心球微粒辐射俘获力的理论研究,对高斯波束任意入射时的辐射俘获力进行了精确地计算与分析。给出了任意入射时偏心球微粒的辐射俘获力的理论表达式。理论退化到双层球微粒并与已有的理论结果进行对比,吻合很好。分析了辐射俘获力随内核半径、球心间距离、入射角度的变化关系;考虑波束极化方向,分析了不同入射方向时辐射俘获力与极化角度之间的关系。
Based on the theoretical researches on the scattering of an eccentric sphere arbitrarily illuminated by a shaped beam and the radiation force exerted by an off-axis incident Gaussian beam on the eccentric sphere,which are recently presented,the radiation force of the eccentric sphere acted by an arbitrarily incident Gaussian beam is calculated exactly and analysed.The series expressions of the radiation force of the eccentric sphere arbitrarily located in a Gaussian beam are provided.After the comparison with the results presented in the literature for the case of two-layered sphere,the radiation forces are numerically calculated when the inner core＇s radius,distance between the two centers,incidence angles are different respectively.Considering the polarized direction of the beam,the relationship between the radiation force and the polarized direction of the beam for different incidence angle is analyzed too.
出处
《科学技术与工程》
2011年第27期6533-6538,共6页
Science Technology and Engineering
基金
山东省自然科学基金(ZR2010AQ022)资助
关键词
辐射俘获力
偏心球微粒
高斯波束
广义米理论
radiation force eccentric sphere Gaussian beam generalized Lorenz-Mie theory
