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Er~(3+)-doped heavy metal oxyfluoride silicate glass was fabricated and characterized, and the absorption spectrum and fluorescence spectrum of the glass were studied. The Judd-Ofelt intensity parameters Ω_t (t =2, 4, 6), spontaneous transition probability, fluorescence branching ratio and radiative lifetime of each energy levels for Er~(3+) were calculated by Judd-Ofelt theory, and stimulated emission cross-section of (()~4I_(13/2))→(()~4I_(15/2)) transition was calculated by McCumber theory. The results show that fluorescence full width at half maximum and stimulated emission cross-section of Er~(3+)-doped heavy metal oxyfluoride silicate glass are broad and large, respectively. Compared with other host glasses, the gain bandwidth property of Er~(3+)-doped heavy metal oxyfluoride silicate glass is close to those of tellurite and bismuth glasses, and has advantage over those of silicate, phosphate and germante glasses.
The Judd-Ofelt intensity parameters Ω_t (t = 2, 4, 6), spontaneous transitions of Er ~ (3 +) - doped heavy metal oxyfluoride silicate glass were fabricated and characterized, and the absorption spectrum and fluorescence spectrum of the glass were studied. probability, fluorescence branching ratio and radiative lifetime of each energy levels for Er ~ (3+) were calculated by Judd-Ofelt theory, and stimulated emission cross-section of () ~ 4I_ (13/2)) → (() ~ The results show that fluorescence full width at half maximum and stimulated emission cross-section of Er ~ (3 +) - doped heavy metal oxyfluoride silicate glass are broad and large, respectively . Compared with other host glasses, the gain bandwidth property of Er ~ (3 +) - doped heavy metal oxyfluoride silicate glass is close to those of tellurite and bismuth glasses, and has advantages over those of silicate, phosphate and germante glasses.