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- Evolution of fluorine doping following the REPUSIL process for the adjustment of optical properties of silica materials
Evolution of fluorine doping following the REPUSIL process for the adjustment of optical properties of silica materials
in: Optical Materials Express (2015)
We report on the fluorine doping and codoping of powder-based silica bulk glasses fabricated using REPUSIL technology. The maximum doping level of 1.5 mol% of SiF4 is associated with a refractive index decrease by -8 x 10¬-3 compared to undoped silica and an essential decrease in the transition temperature by about 200 K. Fluorine codoping is eminently suitable for the direct refractive index adjustment of actively-doped silica glass materials (e.g., Al/Yb or Al/Tm). The fluorine codoping of Al/Yb silica glass significantly reduces parasitic photodarkening processes.
DOI: 10.1364/OME.5.000887