Broadband NIR Emission in Sol-Gel Er(3+)-Activated SiO(2)-Ta(2)O(5) Glass Ceramic Planar and Channel Waveguides for Optical Application
Contribuinte(s) |
Universidade Estadual Paulista (UNESP) |
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Data(s) |
20/05/2014
20/05/2014
01/03/2011
|
Resumo |
Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) An Er-doped SiO(2):Ta(2)O(5) optical channel waveguide and nanocomposite were prepared by the sol-gel route at a Si:Ta 50:50 molar ratio. Channels with an excellent surface profile were easily and quickly fabricated by focusing a femtosecond laser onto the surface of multilayered films deposited on SiO(2)/Si substrates. In parallel, the same sol used to prepare the film was annealed at 900, 1000, and 1100 degrees C for 2 h, to get the nanocomposite materials. A broadband NIR emission around 1538 nm, assigned to the 4 vertical bar(13/2)-> 4 vertical bar(15/2) transition of the Er(3+) ions was observed in the nanocomposites of amorphous SiO(2) containing dispersed Ta(2)O(5) nanocrystals. The 4 vertical bar(13/2) lifetime and emission bandwidth depend on the annealing temperature. In conclusion, Er(3+)-doped SiO(2):Ta(2)O(5) channel waveguides and nanocomposites are promising materials for photonic applications. |
Formato |
2540-2544 |
Identificador |
http://dx.doi.org/10.1166/jnn.2011.3565 Journal of Nanoscience and Nanotechnology. Stevenson Ranch: Amer Scientific Publishers, v. 11, n. 3, p. 2540-2544, 2011. 1533-4880 http://hdl.handle.net/11449/40580 10.1166/jnn.2011.3565 WOS:000288102300105 |
Idioma(s) |
eng |
Publicador |
Amer Scientific Publishers |
Relação |
Journal of Nanoscience and Nanotechnology |
Direitos |
closedAccess |
Palavras-Chave | #Broadband NIR Emission #Sol-Gel Er(3+)-Activated SiO(2)-Ta(2)O(5) Glass Ceramic #Channel Waveguides |
Tipo |
info:eu-repo/semantics/article |