Highly adjustable helical beam:design and propagation characteristics(Invited Paper)  

作　　者：闻远辉 陈钰杰 张彦峰 余思远 

机构地区：[1]State Key Laboratory of Optoelectronic Materials and Technologies,School of Electronics and Information Technology,Sun Yat-sen University,Guangzhou 510275,China [2]Photonics Group,Merchant Venturers School of Engineering,University of Bristol,Bristol BS8 1 UB,UK

出　　处：《Chinese Optics Letters》2017年第3期41-45,共5页中国光学快报（英文版）

基　　金：supported by the National Basic Research Program of China(973 Program)(No.2014CB340000);the National Natural Science Foundations of China(Nos.61323001,61490715,51403244,and 11304401);the Natural Science Foundation of Guangdong Province(No.2014A030313104)

摘　　要：Light fields with extraordinary propagation behaviors, such as nondiffracting and self-bending, are useful in the optical delivery of energy, information, and even objects. A kind of helical beam is constructed here based on the caustic method. With the appropriate design, the main lobe of these helical beams can be both well-confined and almost nondiffracting, while moving along a helix with its radius, period, number of rotations, and main lobes highly adjustable. In addition, the peak intensity of the main lobe fluctuates below 15% during propagation. These promising characteristics may enable a variety of potential applications based on these beams.Light fields with extraordinary propagation behaviors, such as nondiffracting and self-bending, are useful in the optical delivery of energy, information, and even objects. A kind of helical beam is constructed here based on the caustic method. With the appropriate design, the main lobe of these helical beams can be both well-confined and almost nondiffracting, while moving along a helix with its radius, period, number of rotations, and main lobes highly adjustable. In addition, the peak intensity of the main lobe fluctuates below 15% during propagation. These promising characteristics may enable a variety of potential applications based on these beams.

关 键 词：OPTICS 

分 类 号：O43[机械工程—光学工程]