Alencar, Márcio A. R. C. ; Maciel, Glauco S. ; de Araujo, Cid B. ; Patra, Amitava (2008) Red to green upconversion in Er3+-doped BaTiO3 nanorods Journal of Nanoscience and Nanotechnology, 8 (12). pp. 6564-6568. ISSN 1533-4880
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Official URL: http://www.ingentaconnect.com/content/asp/jnn/2008...
Abstract
We investigated the frequency upconversion (UC) process in BaTiO3:Er3+ nanocrystals for excitation wavelengths in the range 638 to 660 nm. Green upconversion emissions at 526 and 547 nm corresponding to 2H11/2 → 4I15/2 and 4S3/2 → 4I15/2 to transitions of the Er3+ were observed. The excitation spectrum for UC emissions presented three bands, due to ground state and excited state absorption of Er3+ ions. The UC intensity as a function of the laser power was investigated and it was found this a two-photon absorption process.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to American Scientific Publishers. |
| ID Code: | 104820 |
| Deposited On: | 01 Dec 2017 11:07 |
| Last Modified: | 01 Dec 2017 11:07 |
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