Influence of Hyperbolic Vertex on Axicon-Focusing Cylindrical Vector Beams

被引：2

作者：

Liu Qingwei ^{[1
]}

Li Chongguang ^{[1
]}

Lou Yuli ^{[1
]}

Wang Huaying ^{[2
]}

Dong Zhao ^{[2
]}

Gui Jinbin ^{[1
]}

Song Qinghe ^{[1
]}

Yang Li ^{[1
]}

机构：

[1] Kunming Univ Sci & Technol, Coll Sci, Key Lab Laser Informat Proc Technol & Applicat, Kunming 650500, Yunnan, Peoples R China

[2] Hebei Univ Engn, Coll Math & Phys, Handan 056038, Hebei, Peoples R China

来源：

CHINESE JOURNAL OF LASERS-ZHONGGUO JIGUANG | 2020年 / 47卷 / 04期

关键词：

diffraction; vector diffraction theory; hyperbolic vertex; cylindrical vector beams; waist radius; oscillation phenomenon; POLARIZATION;

D O I：

10.3788/CJL202047.0409001

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

In this study, we investigate the axicon-focusing characteristics of a cylindrical vector beam based on the Rayleigh-Sommerfeld vector diffraction theory and the amplitude transmittance function. The results prove that the vector focus field of a radially polarized beam comprises radial and longitudinal components, whereas that of an azimuthally polarized beam only comprises an azimuthal component. Further, the focus depth of the focus field increases with the increasing waist radius of the beam. When compared with the ideal case, the focal depth of the focus field remains almost unchanged when the axicon apex is hyperbola; however, its intensity oscillates because of the interference effect, which is dependent on the waist radius of the incident beam. This oscillation phenomenon disappears when the waist radius of the radially and azimuthally polarized beams arc 4 mm and 3.5 mm, respectively. The obtained results provide a reference for the practical application of the axicon systems and the improvement of the theory of cylindrical vector beam focusing.

引用

页数：11

共 26 条

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