Article

Thermo-optical properties of OH-free erbium-doped low silica calcium aluminosilicate glasses measured by thermal lens technique

Instituto de Fı́sica de São Carlos, Universidade de São Paulo – USP, São Carlos – SP, Brazil; Instituto de Fı́sica Gleb Wataghin, Universidade Estadual de Campinas – UNICAMP, Campinas – SP, Brazil; Departamento de Fı́sica, Universidade Estadual de Maringá – UEM, Maringá – PR, Brazil
Journal of Non-Crystalline Solids DOI:10.1016/S0022-3093(01)00404-5 pp.210-216

ABSTRACT Thermal lens spectrometry (TLS) of thermo-optical properties of low silica content calcium aluminosilicate glasses (27.1Al2O3, 58.1CaO, 7.9SiO2 and 6.9MgO in mol%) was performed. The thermal diffusivity was for undoped sample and for -doped one. The ds/dT for undoped samples was . The thermal conductivity was around 14 mW/cm K with some dependence on Er2O3 concentration. The fraction of the absorbed energy converted into heat by Er2O3-doped samples was about 60%.

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Keywords

absorbed energy
 
Er2O3 concentration
 
Er2O3-doped samples
 
low silica content calcium aluminosilicate glasses
 
thermal conductivity
 
thermal diffusivity
 
Thermal lens spectrometry
 
TLS
 
undoped sample
 
undoped samples