平面波经小圆孔衍射的轴上光强特性  

Characteristics of Axial Light Intensity of Planar Wave Diffracted by Small Circular Aperture

作　　者：周国泉[1] 赵道木[1] 王绍民[1] 

机构地区：[1]浙江大学物理系

出　　处：《光学学报》2003年第1期22-25,共4页Acta Optica Sinica

基　　金：国家自然科学基金 (19974 0 38;6 0 2 76 0 35和 10 2 76 0 34)资助课题

摘　　要：基于精确的衍射场公式和横截面上光强的精确表述 ,分析讨论了单色平面光波经小圆孔衍射后 ,其衍射光束轴上光强的最大值以及轴上光强极值的数目和小圆孔半径的关系 ;并且由此考察了一般的菲涅耳数计算公式的使用条件。Based on the accurate diffraction formula and the accurate expression of light intensity on the transverse plane, the characteristics of axial light intensity of planar wave diffracted by small circular aperture are investigated. Variation relations of the maximum axial light intensity and the numbers of light extremum versus the radius of small circular aperture are given. The application condition of general Fresnel number formula is also studied.

关 键 词：平面波 物理光学 轴上光强 衍射 小圆孔 菲涅耳数 

分 类 号：O436.1[机械工程—光学工程]