Computation of Bessel beams in the FDTD method

摘要：

　　Based on the angular spectrum representation(ASR)of the Bessel beams,Bessel beam sources are generated in three-dimensional FDTD using the total-field/scattered-field(TF/ST)method.The correctness and accuracy of the method are verified by comparing the reconstructed field in FDTD with the original field.Comparisons of scattering intensity diagrams calculated using FDTD and those obtained using the generalized Lorenz-Mie theory(GLMT)are implemented for a dielectric sphere illuminated by a Bessel beam,very good agreements have been achieved.The approach presented in this paper can be applied to generate other structured beam sources in FDTD,which provides an access to solve structured beam scattering by complex particles using FDTD.

关键词： FDTD Bessel beam Electromagnetic scattering Total-field/scattered-field method generalized Lorenz-Mie theory

作者: Zhefeng Wu Jiajie Wang Yiping Han Le Zhu Zhiwei Cui Wenjuan Zhao

作者单位: School of Physics and Optoelectronic Engineering Xidian University Xian,China

会议类型: 国际会议

会议名称: The 12th International Symposium Antennas, Propagation, and EM Theory(ISAPE 2018)?(第十二届天线、传播与电磁理论国际学术会议)

会议地点: 杭州

会议语种:英文

页码: 1-4

在线出版日期: 2018-12-03（万方平台首次上网日期，不代表论文的发表时间）