| dc.contributor | Universidade Estadual Paulista (UNESP) | |
| dc.creator | Barbosa, A. J. | |
| dc.creator | Dias Filho, F. A. | |
| dc.creator | Messaddeq, Younes | |
| dc.creator | Ribeiro, Sidney José Lima | |
| dc.creator | Goncalves, R. R. | |
| dc.creator | Luthi, S. R. | |
| dc.creator | Gomes, A. S. L. | |
| dc.date | 2014-05-20T15:25:56Z | |
| dc.date | 2016-10-25T18:00:32Z | |
| dc.date | 2014-05-20T15:25:56Z | |
| dc.date | 2016-10-25T18:00:32Z | |
| dc.date | 2006-09-15 | |
| dc.date.accessioned | 2017-04-05T23:54:53Z | |
| dc.date.available | 2017-04-05T23:54:53Z | |
| dc.identifier | Journal of Non-crystalline Solids. Amsterdam: Elsevier B.V., v. 352, n. 32-35, p. 3636-3641, 2006. | |
| dc.identifier | 0022-3093 | |
| dc.identifier | http://hdl.handle.net/11449/36246 | |
| dc.identifier | http://acervodigital.unesp.br/handle/11449/36246 | |
| dc.identifier | 10.1016/j.jnoncrysol.2006.03.095 | |
| dc.identifier | WOS:000240706000047 | |
| dc.identifier | http://dx.doi.org/10.1016/j.jnoncrysol.2006.03.095 | |
| dc.identifier.uri | http://repositorioslatinoamericanos.uchile.cl/handle/2250/879807 | |
| dc.description | Sodium phosphoniobate glasses with the composition (mol%) 75NaPO(3)-25Nb(2)O(5) and containing 2 mol% Yb3+ and x mol% Er3+ (0.01 <= x <= 2) were prepared using the conventional melting/casting process. Er3+ emission at 1.5 mu m and infrared-to-visible upconversion emission, upon excitation at 976 nm, are evaluated as a function of the Er3+ concentration. For the lowest Er3+ content, 1.5 mu m emission quantum efficiency was 90%. Increasing the Er3+ concentration up to 2 mol%, the emission quantum efficiency was observed to decrease to 37% due to concentration quenching. The green and red upconversion emission intensity ratio was studied as a function of Yb3+ co-doping and the Er3+-Er3+ energy transfer processes. (c) 2006 Elsevier B.V. All rights reserved. | |
| dc.language | eng | |
| dc.publisher | Elsevier B.V. | |
| dc.relation | Journal of Non-Crystalline Solids | |
| dc.rights | info:eu-repo/semantics/closedAccess | |
| dc.subject | glasses | |
| dc.subject | laser-matter interactions | |
| dc.subject | optical spectroscopy | |
| dc.subject | absorption | |
| dc.subject | luminescence | |
| dc.subject | upconversion | |
| dc.subject | phosphates | |
| dc.subject | rare-earths in glasses | |
| dc.title | 1.5 mu m emission and infrared-to-visible frequency upconversion in Er+3/Yb+3-doped phosphoniobate glasses | |
| dc.type | Otro | |
