College Physics ›› 2019, Vol. 38 ›› Issue (5): 57-.doi: 10.16854 /j.cnki.1000-0712.180109

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Analysis of light intensity distribution for a varied-slid width grating

CAO Chi-yu1,WANG Wen-ling2,HUANG An-ping2   

  1. 1. School of Automatic and Electrical Engineering,Beihang University,Beijing 100083,China; 2. School of Physics Science and Nuclear Energy Engineering,Beihang University,Beijing 100083,China
  • Received:2018-02-09 Revised:2018-12-06 Online:2019-05-20 Published:2019-06-13

Abstract: The regular pattern of the grating diffraction with unequal and cyclic slid width has been analyzed,

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