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Molecules 2018, 23(5), 1105; https://doi.org/10.3390/molecules23051105

Fabrication of Refractive Index Tunable Coating with Moisture-Resistant Function for High-Power Laser Systems Based on Homogeneous Embedding of Surface-Modified Nanoparticles

Research Center of Laser Fusion, CAEP, Mianyang 621900, China
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Academic Editors: Ahmad Mehdi and Sébastien Clément
Received: 23 April 2018 / Revised: 4 May 2018 / Accepted: 4 May 2018 / Published: 7 May 2018
(This article belongs to the Special Issue Sol-Gel Chemistry. From Molecule to Functional Materials)
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Abstract

Moisture-resistant silicone coatings were prepared on the surface of potassium dihydrogen phosphate (KDP) crystal by means of spin-coating, in which hydrophobic-modified SiO2 nanoparticles were embedded in a certain proportion. The refractive index of such coating can be tuned arbitrarily in the range of 1.21–1.44, which endows the KDP optical component with excellent transmission capability as well as the moisture proof effect. A dual-layer anti-reflective coating system was obtained by covering this silicone coating with a porous SiO2 coating which is specially treated to enhance the moisture resistance. Transmittance of such a dual-layer coating system could reach 99.60% and 99.62% at 1064 nm and 532 nm, respectively, by precisely matching the refractive index of both layers. Furthermore, the long-term stability of this coating system has been verified at high humidity ambient of 80% RH for 27 weeks. View Full-Text
Keywords: moisture-resistant; refractive index tunable; high-power laser system moisture-resistant; refractive index tunable; high-power laser system
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Yang, W.; Lei, X.; Hui, H.; Zhang, Q.; Deng, X. Fabrication of Refractive Index Tunable Coating with Moisture-Resistant Function for High-Power Laser Systems Based on Homogeneous Embedding of Surface-Modified Nanoparticles. Molecules 2018, 23, 1105.

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