TEMPERATURE-DEPENDENCE OF OPTICAL-LINE WIDTHS AND SPECIFIC-HEAT OF RARE-EARTH-DOPED SILICATE-GLASSES

Authors
SCHMIDT T BAAK J VANDESTRAAT DA BROM H VOLKER S
Citation
T. Schmidt et al., TEMPERATURE-DEPENDENCE OF OPTICAL-LINE WIDTHS AND SPECIFIC-HEAT OF RARE-EARTH-DOPED SILICATE-GLASSES, Journal of luminescence, 58(1-6), 1994, pp. 180-183
Citations number
16
Categorie Soggetti
Optics
Journal title
Journal of luminescence → ACNP
ISSN journal
00222313
Volume
58
Issue
1-6
Year of publication
1994
Pages
180 - 183
Database
ISI
SICI code
0022-2313(1994)58:1-6<180:TOOWAS>2.0.ZU;2-X
Abstract
Optical dephasing and specific heat were measured on each of two rare- earth-doped silicate glasses between 0.4 and 12 K. The homogeneous lin e width and the contribution of the two-level-systems (TLS) to the spe cific heat follow the same temperature dependence T(alpha) within one sample, alpha being different in the two samples. The results are in a greement with current theories of dephasing in glasses if a dipole-dip ole coupling of the optical transition to the TLS is assumed.