Improvement on contamination resistance to volatile organics and moisture of sol-gel silica antireflective coating for 351 nm laser system by structural modulation with fluorinated compounds

Qinghua Zhang, Yaowei Wei, Wei Yang, Haohao Hui, Xueran Deng, Jian Wang, Qiao Xu, Jun Shen

Research output: Contribution to journalArticlepeer-review

27 Scopus citations

Abstract

A new silica antireflective (AR) coating with excellent spectral stability and laser-induced damage threshold (LIDT), which are crucial characteristics in high-powered laser systems, was prepared using the sol-gel method. First, aided by 2,2,3,3,4,4,5,5,6,6,7,7-dodecafluoro-1,8-octanediol (simplified as DFDO), cross-linking among silica particles was facilitated. Thus high and adjustable inter-particle porosity was obtained and hence the refractive indices of the coatings were modulated. Next, poly(2,2,3,4,4,4-hexafluorobutyl) acrylate (simplified as PHFBA) was utilized to occupy micro-pores inside the coating in order to protect them from contamination. Consequently, the volatile organic and water vapor resistance of resultant DFDO/PHFBA/silica coatings was improved dramatically. By characterizing aggregating manner and stacking condition between particles, the modification process of the proposed AR coating was clarified in details.

Original languageEnglish
Pages (from-to)4529-4536
Number of pages8
JournalRSC Advances
Volume5
Issue number6
DOIs
StatePublished - 2015
Externally publishedYes

Fingerprint

Dive into the research topics of 'Improvement on contamination resistance to volatile organics and moisture of sol-gel silica antireflective coating for 351 nm laser system by structural modulation with fluorinated compounds'. Together they form a unique fingerprint.

Cite this