Optical Path Design of Bessel Beams at W Band by FDTD Method

摘要：

Bessel beams are diffraction-free beams and have many novel properties. In this paper, we designed the optical path to generate the Bessel beams in millimeter wave band using three elements. A dielectric hybrid-mode horn is designed to generate a Gaussian beam, a lens is used to transform the Gaussian beam, and an axicon is placed behind the transform lens to convert the Gaussian beam into a Bessel beam. The designed optical path is simulated by the finite-difference time-domain method. The transversal intensity distribution of the generated Bessel beam has good agreement with the ideal Bessel beam. It can propagate longer than 50mm and suffers little diffraction.

关键词： Bessel beams finite-difference time-domain millimeter wave

作者: Jinglei Zhang Hongfu Meng Wenbin Dou

作者单位: State Key Laboratory of Millimeter Waves, School of Information Science and Engineering, Southeast University, Nanjing 210096, P. R. China

会议类型: 国际会议

会议名称: 2012 5th Global Symposium on Millimeter-Waves(2012年第五届全球毫米波会议 GSMM 2012)

会议地点: 哈尔滨

会议语种:英文

页码: 405-408

在线出版日期: 2012-05-27（万方平台首次上网日期，不代表论文的发表时间）