Spectroscopic characteristics of Tm3+ in Tm and Tm,Nd, Yb:Sc2O3 ceramic |
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| Authors: | V. Lupei A. Lupei C. Gheorghe A. Ikesue |
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| Affiliation: | 1. Institute of Atomic Physics—INFLPR, Laboratory of Solid-State Quantum Electronics, 077125 Bucharest, Romania;2. World-Laboratory Co. Ltd., Atsuta-ku, Nagoya 4656-8587, Japan;1. Departamento de Física de Materiales, Universidad Autónoma de Madrid, 28049 Madrid, Spain;2. Instituto de Ciencia de Materiales de Madrid, Consejo Superior de Investigaciones Cientificas, 28049 Madrid, Spain;3. Departamento de Física de Materiales, Universidad Autónoma de Madrid, 28049 Madrid, Spain |
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| Abstract: | The spectroscopic investigation of Tm3+ or (Nd, Yb, Tm)-doped Sc2O3 transparent ceramics, as laser-active media for visible and IR emission, was performed. The spectra are dominated by Tm3+ ions in sites of C2 symmetry and an energy level scheme and other spectral parameters were determined. The strong concentration quenching of 3H4 level emission in Tm:Sc2O3 at 300 K is discussed by considering the resonant cross-relaxation (3H4→3F4)?(3H6→3F4) process and multipolar interactions of various orders. The main energy-transfer processes leading to the blue upconversion emission from the 1G4 Tm3+ level in (Tm, Nd, Yb):Sc2O3 ceramic, under pulsed pumping at 808.3 nm were evidenced. |
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