Sol-Gel Technology for French Inertial Confinement Fusion Program
It is well established by manufacturers and users that optical coatings are generally prepared by the well known Physical Vapor Deposition (PVD) technology. Sol-gel technology is an effective and competitive alternative. This paper will first emphasize on the sol-gel thin film history and link the historical development in this field with the works concerning the technology for high power lasers. Next, the chemistry of the sol-gel process will be discussed, as well as the production of optical coatings and the related deposition techniques. Finally, the paper will describe the preparation and performance of different types of sol-gel optical coatings we have developed to fulfill the requirements of a future 1.8-MJ/500-TW (351-nm) pulsed Nd:glass laser. This powerful laser is to be used for our national Inertial Confinement Fusion (ICF) program, to demonstrate at the laboratory scale, ignition of deuteriumtritium fusion fuel. This paper will provide a convincing argument that optical coatings, are some of the useful products available from sol-gel technology.
KeywordsOptical Coating Inertial Confinement Fusion Zr02 Particle Maximum Refractive Index Highly Reflective Coating
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