Thermo-optical characteristics and concentration quenching effects in Nd(3+)doped yttrium calcium borate glasses

Autor(es):Mostrar menos -

Santos, D. R. S. ^[1] ; Santos, C. N. ^{[2, 3, 4]} ; de Camargo, A. S. S. ^[2] ; Silva, W. F. ^[1] ; Santos, W. Q. ^[1] ; Vermelho, M. V. D. ^[1] ; Astrath, N. G. C. ^[5] ; Malacarne, L. C. ^[5] ; Li, M. S. ^[2] ; Hernandes, A. C. ^[2] ; Ibanez, A. ^{[3, 4]} ; Jacinto, C. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Fed Alagoas, Inst Fis, Grp Foton & Fluidos Complexos, BR-57072970 Maceio, Al - Brazil

^[2] Univ Sao Paulo, Inst Fis Sao Carlos, BR-13560970 Sao Carlos, SP - Brazil

^[3] CNRS, Inst Neel, F-38042 Grenoble 9 - France

^[4] Univ Grenoble 1, F-38042 Grenoble 9 - France

^[5] Univ Estadual Maringa, Dept Fis, BR-87020900 Maringa, Parana - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Journal of Chemical Physics; v. 134, n. 12 MAR 28 2011.
• Citações Web of Science: 4

Resumo

In this work we present a comprehensive study of the spectroscopic and thermo-optical properties of a set of samples with composition xNd(2)O(3)-(5-x)Y(2)O(3-)40CaO-55B(2)O(3) (0 <= x <= 1.0 mol%). Their fluorescence quantum efficiency (eta) values were determined using the thermal lens technique and the dependence on the ionic concentration was analyzed in terms of energy transfer processes, based on the Forster-Dexter model of multipolar ion-ion interactions. A maximum eta = 0.54 was found to be substantially higher than for yttrium aluminoborate crystals and glasses with comparable Nd(3+) content. As for the thermo-optical properties of yttrium calcium borate, they are comparable to other well-known laser glasses. The obtained energy transfer microparameters and the weak dependence of. on the Nd(3+) concentration with a high optimum Nd(3+) concentration put this system as a strong candidate for photonics applications. (C) 2011 American Institute of Physics. {[}doi:10.1063/1.3567091] (AU)

• Processo FAPESP: 04/00093-0 - Síntese e caracterização de componentes micro-ópticos bifuncionais e filmes amorfos dos sistemas RE: Y2O3 - Al2O3 - B2O3 e RE: Y2O3 - CaO - B2O3 (RE = Nd, Er, Sm) para aplicação em micro-óptica e luminescência
• Beneficiário: Cristiane Nascimento Santos
• Modalidade de apoio: Bolsas no Brasil - Doutorado