Porous MgF2-SiO2 films with low refractive index of 1.26 were made by sol-gel process. The film was consisted of MgF2 particles and SiO2 binder connecting them. The refractive index was variable with the processing conditions.
© 2007 Optical Society of America
H. Ishizawa, T. Murata, and A. Tanaka, " Preparation of MgF2-SiO2 Thin Films with Low Refractive Index by Sol-gel Process," in Optical Interference Coatings, OSA Technical Digest (CD) (Optical Society of America, 2007), paper ThD9.
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