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Energy Transfer and Population Inversion in Heavy Metal Oxide Glasses Doped with Tm 3+ and Tb 3+
Author(s) -
Song Jay Hyok,
Heo Jong
Publication year - 2004
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.2004.tb06338.x
Subject(s) - analytical chemistry (journal) , ion , doping , population inversion , emission intensity , energy transfer , population , materials science , oxide , atomic physics , metal , transition metal , chemistry , physics , optics , metallurgy , laser , optoelectronics , biochemistry , demography , organic chemistry , chromatography , sociology , catalysis
Emission properties and energy transfer of PbO–Bi 2 O 3 –Ga 2 O 3 –GeO 2 glasses codoped with Tm 3+ and Tb 3+ ions were investigated. The 1.48‐μm emission due to the Tm 3+ : 3 H 4 → 3 F 4 transition can be used to amplify the S‐band (1460–1530‐nm) signal light. With Tb 3+ addition, the lifetime and emission intensity of the Tm 3+ : 3 F 4 level decreased sharply via the Tm 3+ : 3 F 4 →Tb 3+ : 7 F 0,1,2 energy transfer. Population densities of the 3 F 4 and 3 H 4 levels in Tm 3+ calculated from rate equations clearly verified that population inversion in Tm 3+ ions became possible with as little as 0.1 mol% of Tb 3+ addition.