摘要
在传统的轴棱锥-透镜光学系统中,产生局域空心光束的入射光一般为圆高斯光束。随着局域空心光束的系统多样化和应用多样化,研究具有特殊形貌的初始光束对局域空心光束的调控有重要的意义。圆高斯光束被多边光阑调制为特殊形貌的多边形光束,经过轴棱锥-透镜光学系统后产生局域空心光束。利用不同多边光阑,包括正三角形、正方形及正六边形,调控光学系统中的光场分布,并通过理论研究和实验测量得到光阑后的衍射光场变化。结果表明,利用多边光阑调控光场,产生的局域空心光束具有多个局部缺失部分。这些缺口的形成,对于多粒子捕获和精准捕获具有潜在的应用价值。同时,也对局域空心光束的多功能应用具有重要意义。
Objective Optical systems(OSs) that produce bottle beams(BBs) are increasingly diversifying in the literature, according to recent studies. However, the practicability of most OSs is relatively limited, and it has been difficult to meet the increasingly flexible application requirements. Therefore, under the premise of satisfying the properties of the bottle light field, it is necessary to design a controllable OS to obtain a multifunctional BB. In the traditional axicon-lens OS, the incident light that produces the BB is generally a circular Gaussian beam(GB). With the diversification of BB systems and applications, the initial beam with a special shape has important research significance for the regulation of BBs. Therefore, in this study, we design an OS for BBs and use the polygonal aperture to control the light field and analyze its characteristics. The circular GB was modulated by the polygonal aperture into a polygonal beam with a special shape. The BB produced after passing through the axicon-lens OS carries multiple notches. This has potential application value for multiparticle capture and precise capture and is of great significance for the multifunctional application of BBs.Methods In this study,the axicon-lens structure was an OS,and polygonal apertures were placed before the axicon,so the BB with multiple notches was generated after the focusing lens.Polygonal apertures,including regular triangles,regular quadrilaterals,and regular hexagonal,were taken as the research objects.First,we theoretically analyzed and derived their transmission aperture functions,and used the Collins formula to calculate the light field distribution formula after the BB passes through the axicon-lens.Then,we used MATLAB software to analyze the theoretical formula and obtain the diffraction spot pattern after the axicon-lens via simulation and studied the relationship between the polygonal aperture shape and central diffraction spot.Finally,an experimental device of the OS was developed by replacing the polygonal aperture a
作者
林兴磊
吕金光
陈东林
邢政权
邹永刚
张贺
Lin Xinglei;Lü Jinguang;Chen Donglin;Xing Zhengquan;Zou Yonggang;Zhang He(State Key Laboratory of High Power Semiconductor Laser,Changchun University of Science and Technology,Changchun,Jilin 130022,China;State Key Laboratory of Applied Optics,Changchun Institute of Optics,Fine Mechanics and Physics,Chinese Academy of Sciences,Changchun,Jilin 130033,China;Military Agency of General Armament Department in Changchun,Changchun,Jilin 130033,China)
出处
《中国激光》
EI
CAS
CSCD
北大核心
2021年第13期124-131,共8页
Chinese Journal of Lasers
基金
应用光学国家重点实验室开放基金(SKLA02020001A17)。
关键词
物理光学
局域空心光束
多边光阑
光场调控
physical optics
bottle beam
polygonal aperture
light field control
