Focusing property of the phase modulated radially polarized beam

摘要：

The wavefront phase of incident radially polarized beam is modulated into two portions, the center circle portion and outer annular portion. The radially polarized and longitudinally polarized fields in focal region were investigated theoretically. Increasing the radius of the center circle with K phase shift, the radially polarized field shows ring shape, and one ring pattern evolves to two-ring, and then three-ring pattern. The longitudinally polarized field turns into one spot, which splits into two spots, and then combines back into one spot with increasing the radius of the center circle. Maximum intensity ratio of longitude polarized to radially polarized fields increases, decreases, and then increases with the increasing radius. The effect of phase of the center portion affects the radially polarized and longitude polarized fields considerably. And the maximum intensity ratio evolution principle with increasing phase of the center circle portion differs considerably for different radius of the inner portion.

关键词： component Cylindrical vector beam Superresolution Vector diffractive theory

作者: Ling Guo Jinsong Li Ying Fang Xiumin Gao

作者单位: College of Optics and Electronics Technology China Jiliang University Hangzhou, China Electronics and Information College Hangzhou Dianzi University Hangzhou, China

会议类型: 国际会议

会议名称: 2011 4th International Congress on Image and Signal Processing(第四届图像与信号处理国际学术会议 CISP 2011)

会议地点: 上海

会议语种:英文

页码: 2777-2781

在线出版日期: 2011-10-15（万方平台首次上网日期，不代表论文的发表时间）