ABSORPTION AND PHOTOLUMINESCENCE SPECTRA OF TM(3+)-DOPED FLUOROPHOSPHATE GLASSES

We have carried out absorption and photoluminescence spectra of six newly prepared TmF3 (2 M%) doped fluorophosphate glasses of composition: (NaPO3)6-BaF2-ZnF2-RF where R = Li, Na, K, (Li-Na), (Na-K) and (K-Li). By evaluating the Judd-Ofelt intensity parameters for the measured absorption levels, the recorded photoluminescence spectra have been analysed to estimate the fluorescent radiative properties (A, A(T), beta(R)) and the stimulated emission cross-sections (sigma(P)E) of the following luminescence transitions: 1G4-->H-3(6) (lambda = 451 nm) 1D2-->H-3(4) (lambda = 468 nm) P-3(0)-->F-3(2) (lambda = 482 nm) 1D2-->H-3(5) (lambda = 492 nm). These have been determined in order to understand the alkali effects on the Tm3+-optical glasses studied.