Results are reported of reflectivity and complex refractive-index measurements performed on a number of samples of oxide glasses (SiO2 and GeO2 with different dopings) to be used as cladding materials in hollow-core fibers for medium IR and in particular CO2 laser radiation transmission. GeO2 glasses are more convenient for guidance of CO2 radiation at λ = 10.6 µm, while comparable results can be obtained with SiO2 glasses with 27.8% doping for λ ~9.2 µm.
© 1985 Optical Society of America
A. M. Scheggi, R. Falcial, and G. Gironi, "Characterization of oxide glasses for hollow-core middle IR fibers," Appl. Opt. 24, 4392-4394 (1985)