艾里光束的产生及对微小粒子的操作  

Generation and operation of small particles by Airy beams

作　　者：马振新[1] 王海凤[1] 刘仲之 朱厚飞 

机构地区：[1]上海理工大学光电信息与计算机工程学院,上海200093

出　　处：《光学仪器》2016年第2期134-138,144,共6页Optical Instruments

基　　金：国家重点基础研究发展计划(2015CB352001)

摘　　要：近年来,艾里光束因具有横向加速、无衍射以及自愈等独特性质引起了人们的广泛关注。该光束的光场振幅分布遵从艾里函数,并满足类似薛定谔型的波动方程。从理论和实验、线性和非线性、应用等多个方面对它进行研究。从理论上阐述了艾里光束产生的原理,用相位空间光调制器从实验上产生了艾里光束。在此基础上,采用瑞利近似方法,重点分析了在一维艾里光束作用下,粒子所受的光学散射力、梯度力以及粒子所受的光学散射力和梯度力与粒子半径、折射率的关系。Recently,Airy beams have attracted wide interests due to its unique properties of transverse self-accelerating,diffraction-free and self-healing.The amplitude distribution of light field of Airy beams follows the Airy function,satisfying the similar Schrodinger equation.Researchers have conducted the researches about the Airy beam including theory,experiment,linearity and nonlinearity,application,and other aspects.In this paper,we investigate theoretical principle of generation Airy beams,using a spatial light modulator to experimentally generate Airy beams array.On the basis of it,we use Rayleigh approximation method to investigate the gradient and scattering forces of one-dimensional Airy beams.The impact of particle radius and refractive index on the gradient and scattering forces were discussed.

关 键 词：艾里光束 横向加速 瑞利近似 散射力和梯度力 

分 类 号：O436[机械工程—光学工程]