可调谐艾里光束及其传输特性  

Tunable Airy beam and its propagation properties

作　　者：刘会龙[1,2] 夏菁[1,2] 陈懂[1,2] 吕彦飞[1,2] 

机构地区：[1]云南大学物理与天文学院,云南昆明650091 [2]云南省粒子天体物理重点实验室,云南昆明650091

出　　处：《应用光学》2016年第6期847-853,共7页Journal of Applied Optics

基　　金：国家自然科学基金(61475026;61275135;61108029)

摘　　要：艾里光束是一种新型无衍射光束,解决了激光在传播过程中的衍射效应。基于艾里变换技术,介绍一种可以通过椭圆平顶高斯光束产生的新型艾里光束,即可调谐艾里光束。通过理论计算,可以看出调节椭圆平顶高斯光束的束宽比可获得单尾艾里光束,同时,可调谐艾里光束的尾长可以通过调节入射椭圆平顶高斯光束的阶数来控制。通过研究,当束宽比p=1时,艾里光束的加速方向沿x轴45°方向;p=1/2时,加速方向沿x轴31°方向,p=1/3时,加速方向为沿x正方向,可见调节束宽比p的大小可以改变艾里光束的加速方向。Having dealt with the diffraction effects of a propagating laser,the Airy beam is a new kind of beam with non-diffraction.In our paper,based on the Airy-transformation technique,we introduced a novel Airy beam with the tunable tail,which could be generated from the elliptical flat-topped Gaussian beam.Through calculation,the Airy beam with the single tail was obtained by adjusting the ration of the beam width of elliptical flat-topped Gaussian beam.And the tail length of Airy beam was controlled by the order N of incident beam.Research results show that the acceleration direction of Airy beam is 45°along xaxis with p=1,being 31°with p=1/2,and being xpositive direction with p=1/3.It can be seen that the acceleration direction of Airy beam could be adjusted by changing the values of p.

关 键 词：艾里光束 艾里变换 平顶高斯光束 传播特性 

分 类 号：TN201[电子电信—物理电子学]