Low expansivity, high transmission titania doped silica glass

摘要

In one embodiment the present disclosure is directed to a silica-titania glass with an internal transmission of >90%/cm at wavelengths from 340 nm to 840 nm. In another embodiment the internal transmission is >93%/cm at wavelengths from 340 nm to 840 nm. In a further embodiment the internal transmission is >95%/cm at wavelengths from 340 nm to 840 nm. In another embodiment the disclosure is directed to a silica-titania glass with an overall transmission through an optic made of the glass is >84% at wavelengths from 340 nm to 840 nm. In another embodiment overall transmission through an optic made of the glass is >86% at wavelengths from 340 nm to 840 nm. In a further embodiment the overall transmission through an optic made of the glass is >88% at wavelengths from 330 nm to 840 nm. In a further embodiment the silica-titania glass has a Ti+3 concentration level [Ti3+] less than 3 ppm by weight.