Title :
Er3+→Tm3+ energy transfer in YLiF4 (YLF)
Author :
Brenier, A. ; Moncorge, R. ; Pedrini, C.
Author_Institution :
Phys.-Chimie des Mater. Luminescents, Lyon I Univ., Villeurbanne, France
fDate :
6/1/1990 12:00:00 AM
Abstract :
The Er3+→Tm3+ energy transfers are analyzed in doubly doped YLiF4:Er+, Tm3+ single crystals. A good description of the excited state dynamics is achieved with models based on rate equations and using lifetime data. In particular, it is shown that the two lowest excited states 4I13/2 of Er3+ and 3F4 of Tm3+ are in thermal equilibrium at room temperature because of efficient Er&lrarr2;Tm energy transfers between these two levels
Keywords :
erbium; laser theory; lithium compounds; solid lasers; thulium; yttrium compounds; Er3+→Tm3+ energy transfer; YLiF4; YLiF4:Er+, Tm3+ single crystals; excited state dynamics; lifetime data; lowest excited states; rate equations; room temperature; thermal equilibrium; Crystals; Doping; Energy exchange; Equations; Erbium; Laser transitions; Optical materials; Optical pumping; Optical sensors; Temperature distribution;
Journal_Title :
Quantum Electronics, IEEE Journal of
