Bessel-like beam generated by an axicon based on parallel-plate waveguides

被引：5
|
作者：
Shen, Tingting [1 ]
Lang, Tingting [1 ]
Wu, Mengru [1 ]
Han, Zhanghua [2 ]
机构：
[1] China Jiliang Univ, Inst Optoelect Technol, Hangzhou 310018, Zhejiang, Peoples R China
[2] Nanjing Univ Sci & Technol, Adv Launching Coinnovat Ctr, Nanjing 210094, Jiangsu, Peoples R China
来源：
APPLIED OPTICS | 2018年 / 57卷 / 21期
基金：
中国国家自然科学基金;
关键词：
TRANSVERSE-ELECTRIC TE1; DIFFRACTION-FREE BEAMS; PROPAGATION; HOLOGRAMS;
D O I：
10.1364/AO.57.006174
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
The axicon is the simplest and most effective optical element for generating the zero-order Bessel-like beam. The zero-order Bessel-like beam, which has the characteristics of small spot size, high brightness, good direction, and large collimation distance, can be applied to optical micromanipulation and power transmission. In this paper, we proposed and designed a structure for phase manipulation based on parallel-plate waveguides that can be used to realize the functionality of the axicon in the terahertz (THz) region. Meanwhile, we characterized the influence of the cone angle of the axicon and the waist radius of the incident Gaussian beam on the generated zero-order Bessel-like beam by simulation. The planar structure, consisting of a parallel stack of thin copper plates, can be easily fabricated to fulfill the phase requirement to realize the zero-order Bessel-like beam and also can be utilized in THz imaging systems, THz sensing systems, THz communication systems, etc. (C) 2018 Optical Society of America
引用
收藏
页码：6174 / 6180
页数：7
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