Thermo-optic coefficients of potassium alumino-metaphosphate glasses

Lee, E.T.Y. and Taylor, E.R.M (2004) Thermo-optic coefficients of potassium alumino-metaphosphate glasses. Journal of Physics and Chemistry of Solids, 65 (6), 1187-1192. (doi:10.1016/j.jpcs.2004.01.007).

Abstract

Metaphosphate compositions of the K₂O–Al₂O₃–P₂O₅ system have been melted and their properties measured to assess their potential for athermalisation. The results show that the addition of alumina (Al₂O₃) increases the refractive index and glass transition temperature (T_g), decreases the thermal expansion coefficient (α) and leads to a more positive thermo-optic coefficient (dn/dT). Glasses must exhibit negative dn/dT as a requirement for athermalisation purposes.

This record has no associated files available for download.

Contributors

Download statistics