Room temperature blue upconverted luminescence via photon avalanche pumping in Cs2NaGdCl6:Tm3+
| Autor: | M.F. Joubert, Stephan Guy, Peter A. Tanner, S. Cuerq |
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| Rok vydání: | 1997 |
| Předmět: |
Photon
Chemistry business.industry Doping Biophysics Physics::Optics General Chemistry Condensed Matter Physics Biochemistry Atomic and Molecular Physics and Optics Photon upconversion Excited state Optoelectronics Atomic physics Luminescence Absorption (electromagnetic radiation) business Multiplet Excitation |
| Zdroj: | Journal of Luminescence. 75:287-293 |
| ISSN: | 0022-2313 |
| Popis: | Experimental results are presented to show that the intense, blue upconverted luminescence observed from Cs2NaGdCl6 doped with 6,10 and 15 at.% Tm3+, when excited by a cw laser near 650 nm at room temperature, is due to a photon avalanche process. A slow rise of the upconverted blue-emission intensity, over several seconds, takes place near the threshold power level. Emission is not only observed from the1G4 term manifold, but also from1D2. The well-resolved upconversion excitation spectrum indicates clearly that excited-state absorption to1G4 takes place from the3F4 multiplet term of Tm3+. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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