材料科学
折射率
多孔性
磨损(机械)
光学
胶体二氧化硅
胶体
波长
复合材料
填料(材料)
悬挂(拓扑)
涂层
光电子学
化学工程
物理
工程类
数学
纯数学
同伦
出处
期刊:Applied optics
[The Optical Society]
日期:1992-10-01
卷期号:31 (28): 6145-6145
被引量:163
摘要
Coatings of refractive index that vary between 1.22 and 1.44 were prepared from combinations of a colloidal silica suspension and a polysiloxane solution. The polysiloxane acted both as a binder and a filler for the colloidal silica particles. Increasing ratios gave coatings of lower porosity, hence higher refractive index, and better abrasion resistance. This variation in refractive index allowed highefficiency quarter-wave antireflection coatings to be prepared on substrates whose index varied from 1.45 to 2.1. The laser damage thresholds of all the coatings were >50 J/cm(2) at a wavelength of 1.06 microm with a 10-ns pulse length.
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