缝宽周期性变化的光栅的衍射光强分析
收稿日期: 2018-02-09
修回日期: 2018-12-06
网络出版日期: 2019-06-13
基金资助
北京航空航天大学校级重点教改项目( 教师讲授与同伴教学有机结合的大学物理改革探索) ; 教育部高校指导委员会2017 年全国高等学校教学研究项目资助
Analysis of light intensity distribution for a varied-slid width grating
Received date: 2018-02-09
Revised date: 2018-12-06
Online published: 2019-06-13
“光栅的一个周期的衍射因子”与“光栅的周期间的干涉因子”的概念描述缝宽周期性变化的光栅的衍射光强分布.进一步，由
Matlab 仿真模拟了缝宽周期性变化的光栅的衍射相对光强分布曲线图，并定性讨论了光栅的相邻缝的间距d、缝宽、缝的数量
等参数对光强分布的影响，从而更加形象、准确、多方位地分析变缝宽光栅的衍射规律.
关键词： 缝宽周期性变化的光栅; 夫琅禾费衍射; matlab 仿真
曹驰宇, 王文玲, 黄安平 . 缝宽周期性变化的光栅的衍射光强分析[J]. 大学物理, 2019 , 38(5) : 57 . DOI: 10.16854 /j.cnki.1000-0712.180109
and the corresponding quantitative description of its light intensity distribution has been obtained. By comparing
with equal-slid-width grating，the diffraction factor within a cycle and interference factor among cycles are applied
to describe the light intensity distribution of the varied-slid-width grating. Such a light intensity distribution has
further been simulated by Matlab and the influence of each parameter has been discussed to get a more accurate
demonstration of the light intensity distribution of the varied-slid-width grating.
Key words： cyclic-slid-width grating; Fraunhofer diffraction; Matlab
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