Bessel光束经柱透镜的衍射光场  

Diffraction Optical Field of Bessel Beam Passing Through Cylindrical Lens

作　　者：谢晓霞[1,2] 吴逢铁[1,2] 纪佳位 

机构地区：[1]华侨大学信息科学与工程学院,福建厦门361021 [2]福建省光传输与变换重点实验室,福建厦门361021

出　　处：《华侨大学学报（自然科学版）》2016年第3期291-294,共4页Journal of Huaqiao University(Natural Science)

基　　金：国家自然科学基金资助项目(61178015);福建省科技创新平台计划项目(2012H2002);福建省泉州市科技重点资助项目(2014Z127)

摘　　要：基于空间域中的广义惠更斯-菲涅耳衍射积分理论,导出Bessel光束通过柱透镜光强分布表达式,利用计算机模拟不同传播距离处的截面光强分布.利用轴棱锥产生Bessel光束,光束经过焦距为130mm的柱透镜,用CCD拍摄柱透镜的后不同传播距离的处光强分布.结果表明:实验所得结果与理论模拟吻合,Bessel光束经柱透镜后将产生唇状焦散光束.In this paper,propagation process of Bessel beam which generated by axicon passing through cylindrical lens was studied.Based on the generalized huygens fresnel diffraction integral,the expression of the light intensity distribution that Bessel beam passing through cylindrical lens is given.The transverse intensity distribution in different position was numerical simulated.In the experiment,generated Bessel beam by axicon through the cylindrical lens which f=130mm.The optical intensity distribution in difference propagation distances was captured by a CCD camera.The theoretical analysis and the experimental results both show that Bessel beam passing through cylindrical lens can generate diffraction-free caustics beam.

关 键 词：BESSEL光束 柱透镜 轴棱锥 无衍射光束 衍射理论 

分 类 号：O436.1[机械工程—光学工程]