中国科学院南京天文光学技术研究所机构知识库

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 finallyget 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。