| 夫朗和费衍射现象的矢量分析方法--相子扇形图示 |
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| 引用本文： | 陈力敏,丁剑平,周进.夫朗和费衍射现象的矢量分析方法--相子扇形图示[J].四川激光,2003,24(5):36-38. |
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| 作者姓名： | 陈力敏 丁剑平 周进 |
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| 作者单位： | [1]南京医科大学物理教研室，南京210029 [2]南京大学物理系，南京210093 |
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| 摘 要： | 介绍了一种解释夫朗和费衍射现象的矢量图示方法——相子扇形图示，通过分析矢量扇形分布的对称性和密集性，简单直观地说明了夫朗和费衍射图样主极大、次极大及极小的存在条件，同时根据矢量图示简化了强度分布公式的推导过程，并在图中找到公式中每个参量的确定几何意义。
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| 关 键 词： | 夫朗和费衍射 矢量分析方法 相子扇形图示 衍射图样 强度分布 |
| 修稿时间： | 2003年4月1日 |
An ingenious analytical method for Fraunhofer diffraction-phasor diagram |
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| Chen Limin,Ding jianping,Zhou Jin.An ingenious analytical method for Fraunhofer diffraction-phasor diagram[J].Laser Journal,2003,24(5):36-38. |
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| Authors: | Chen Limin Ding jianping Zhou Jin |
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| Affiliation: | Chen Limin 1 Ding jianping 2 Zhou Jin 2 |
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| Abstract: | An ingenious method called sectoral phasor diagram for analyzing light diffraction is introduced in this paper.By analyzing the symmetry and denseness of the phasor distribution arranged in a sector region,we can easily determine the condition under which the principal maximum,the subsidiary maximum or the minimum of a Fraunhofer diffraction pattern occurs.Employing the phasor diagram,the equation of intensity distribution is derived in a manner more straightforward and convenient than before,and each parameter in the equation have definite geometrical meaning corresponding to the diagram. |
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| Keywords: | Fraunhofer Diffraction sectoral phasor diagram diffraction pattern |
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