Preparation of MgF_2-SiO_2 thin films with a low refractive index by a solgel process Ishizawa, Hitoshi ; Niisaka, Shunsuke ; Murata, Tsuyoshi ; Tanaka, Akira Abstract Publication: Applied Optics Pub Date: January 2008 DOI: 10.1364/AO.47.00C200 Bibcode: 2008ApOpt..47C.200I