半波带法讨论单缝夫琅禾费衍射的延伸  

AN EXTENSION OF THE DISCUSSION ON SINGLE-SLIT FRAUNHOFER DIFFRACTION BY USING OF THE FRESNEL'S ZONE

作　　者：薛天缘[1] 

机构地区：[1]天津大学物理系

出　　处：《大学物理》1996年第3期25-27,共3页College Physics

摘　　要：由菲涅耳半波带法思路出发，加以延伸扩展，结合观察屏上波带与子波带的振幅矢量图象，对单缝夫琅禾费衍射的明纹光强与明纹衍射角作了由定性到定量的讨论，剖析了半波带法明纹公式的近似性。An analysis for the intensity of light and diffraction angle of bright fringes of the single -slit Fraunhofer diffraction is developed from qualitative to quantitative discussion,basing on the method of Fresnel's half-band and its extention,and on the obrvation for the amplitute vector features of wave band and sub-band on screen.An analysis for the approximate property of the formuula of the bright fringes obtained from this method is gives.

关 键 词：衍射 振幅矢量 光强 半波带法 

分 类 号：O436.1[机械工程—光学工程]