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Thermo-optic coefficients of potassium alumino-metaphosphate glasses

Thermo-optic coefficients of potassium alumino-metaphosphate glasses
Thermo-optic coefficients of potassium alumino-metaphosphate glasses
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 (Tg), 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.
0022-3697
1187-1192
Lee, E.T.Y.
c687873a-9418-4b42-a083-487f993b4ed4
Taylor, E.R.M
c280f39e-1472-4fc9-9dac-72cb7d626d7e
Lee, E.T.Y.
c687873a-9418-4b42-a083-487f993b4ed4
Taylor, E.R.M
c280f39e-1472-4fc9-9dac-72cb7d626d7e

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).

Record type: Article

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 (Tg), 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.

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Published date: 2004

Identifiers

Local EPrints ID: 46150
URI: http://eprints.soton.ac.uk/id/eprint/46150
ISSN: 0022-3697
PURE UUID: e24d0834-8a63-4059-9d49-10f0945b9c83

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Date deposited: 22 May 2007
Last modified: 07 Apr 2020 16:37

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