Preliminary study on broadband antireflection coatings for large aperture telescopes

被引：1
作者：
Wang, Ye-Ru [1 ,2 ,3 ]
Li, Xin-Nan [1 ,2 ]
Wang, Jin-Feng [1 ,2 ]
Tian, Jie [1 ,2 ]
机构：
[1] Chinese Acad Sci, Nanjing Inst Astron Opt & Technol, Natl Astron Observ, Nanjing 210042, Jiangsu, Peoples R China
[2] Chinese Acad Sci, Nanjing Inst Astron Opt & Technol, Key Lab Astron Opt & Technol, Nanjing 210042, Jiangsu, Peoples R China
[3] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
来源：
RESEARCH IN ASTRONOMY AND ASTROPHYSICS | 2017年 / 17卷 / 12期
基金：
中国国家自然科学基金;
关键词：
instrumentation: miscellaneous; methods: numerical; techniques: spectroscopic; REFRACTIVE-INDEX;
D O I：
10.1088/1674-4527/17/12/124
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
A broadband anti-reflective (AR) coating design for astronomical large-aperture telescopes is proposed. We give simulations of two-, three-and four-layer silica sol-gel on fused silica and finally get the optimal optical constants. As a comparison, we discuss the traditional dielectric material that has been applied to broadband AR coatings. To better guide the following experiment, we also conduct error analysis and feasibility analysis, combining with the technological characteristics of sol-gel. The analytical method is suitable for other wavebands and substrates. It is also instructive for large area AR coatings in the field of solar cells.
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页数：12
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