高斯激光束在Fraunhofer圆孔衍射成像中的球差  

Spherical Aberrations of Gaussian Laser Beam inFraunhofer Circular Aperture Diffraction Imaging

作　　者：夏雄平 张凯[1] 韦贵妹 田恺婧 XIA Xiongping;ZHANG Kai;WEI Guimei;TIAN Kaijing(College of Physics and Electronic Information Engineering,Guilin University of Technology,Guilin 541004,Guangxi Zhuang Autonomous Region,China)

机构地区：[1]桂林理工大学物理与电子信息工程学院,广西桂林541004

出　　处：《吉林大学学报（理学版）》2024年第1期141-146,共6页Journal of Jilin University:Science Edition

基　　金：国家自然科学基金(批准号:11447169);广西自然科学基金(批准号:2018GXNSFAA138180)。

摘　　要：基于标量衍射理论,利用Zernike多项式法构建像差函数,并将其应用到ZEMAX中,研究高斯型激光束在透镜与圆孔距离较大时的Fraunhofer圆孔衍射成像中的球差.实验和理论模拟结果表明,透镜及圆孔和透镜距离对产生球差的影响较大,当选择优化的非球面透镜、较高折射率的透镜材料和小视场时,可有效降低由圆孔和透镜距离较大而产生的球差,从而有效提升衍射成像质量.Based on scalar diffraction theory,the aberration function was constructed by using Zernike polynomial me thod,and the aberration function was applied to ZEMAX to study the spherical aberration of Gaussian laser beam in Fraunhofer circular aperture diffraction ima ging when the distance between lens and circular aperture was large.The experimental and theoretical simulation results show that the lens and the distance between lens and circular aperture have significant effects on spherical aberration.When selecting optimized aspheric lens,lens materials with higher refractive index and small field-of-view,it can effectively reduce the spherical aberration caused by large distance between lens and circular aperture,thereby effectively improving the diffraction imaging quality.

关 键 词：Fraunhofer圆孔衍射 球差 高斯激光束 ZERNIKE多项式 

分 类 号：O436.1[机械工程—光学工程]