Open AccessDiscussion on the stratified merit of graded index coatings
Author(s) -
Zicai Shen,
Jiang Shen,
Shijie Liu,
Kong Wei-Jin,
Jianda Shao,
Zhengxiu Fan
Publication year - 2007
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.56.1325
Subject(s) - materials science , coating , homogeneous , refractive index , stack (abstract data type) , figure of merit , layer (electronics) , optics , composite material , index (typography) , physics , computer science , optoelectronics , thermodynamics , world wide web , programming language
Optical property analysis and preparation of graded index coatings can be approximated by subdividing it into a stack of many homogeneous layers. In this paper, layered medium theory is introduced firstly, which clarifies how to subdivide graded index coatings into homogeneous layers. Then a stratification merit method to get optimal layered number is put forward. At last, linear graded index coatings is taken as an example to illustrate how to obtain the optimal layer number of graded index coatings. Our discussion shows that the optimal layer number of graded index coatings depends on the coating thickness and changing speed of refractive index. When refractive index changes in given range, the layer number of graded index coatings decreases firstly and then increases with the increasing coating thickness.