用菲涅耳衍射理论分析圆孔(屏、球)衍射  

Circular Aperture and Barrier & Sphere Diffraction Imaging Analysis by Fresnel Diffraction Theory

作　　者：刘云[1] 王朴[1] 彭双艳[1] 高慧昀[1] 

机构地区：[1]毕节学院物理系,贵州毕节551700

出　　处：《毕节学院学报（综合版）》2010年第4期64-68,共5页Journal of Bijie University

基　　金：国家自然科学基金资助项目;项目编号:10364001;贵州省教育厅自然科学研究项目;项目编号:20090067

摘　　要：用菲涅耳衍射理论分析圆孔(屏、球)衍射的复振幅分布,根据其复振幅分布式得到的圆孔(屏、球)衍射成像公式与半波带法和矢量法得到的结果一致。并从理论上解释了圆孔衍射和圆屏(球)衍射图样中心的异同和泊松亮斑的成因。这种方法加深了我们对衍射成像过程的认识。Distribution of complex amplitudes of circular aperture and barrier ＆ sphere diffraction imaging is deduced by Fresnel diffraction theory. And imaging formula accordance with results of half-wave and vector method is obtained by their distribution of complex amplitudes. And the different of phenomenon of circular aperture and barrier ＆ sphere diffraction imaging is theoretically studied and Poisson＇s spot of causes is analyzed. So the method could help ones to understand diffraction imaging＇s process.

关 键 词：圆孔 圆屏 衍射 复振幅 

分 类 号：O436.1[机械工程—光学工程]