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Enhanced absorption in very rough overcoated black surfaces
被引：1
作者：
Giovannini, H
Amra, C
机构：
来源：
OPTICAL THIN FILMS V: NEW DEVELOPMENTS
|
1997年
/
3133卷
关键词：
scattering;
thin films;
antireflection coatings;
absorption;
differential method;
black surface;
D O I：
10.1117/12.290185
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ;
080502 ;
摘要：
We show how to use dielectric thin films in order to reduce scattering and maximize broad-band absorption in arbitrary rough overcoated black surfaces. A rigourous calculation is developed thanks to an improved differential method, and the results are compared to experiment. Scattering is reduced by a factor 10 (down to 5.10(-3)), though the starting bare surface is a standard low-cost black paint (5.10(-2) scattering). Absorption can therefore be optimized up to 0.995.
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页码：110 / 114
页数：5
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