Luminescent and thermo-optical properties of Nd3+-doped yttrium aluminoborate laser glasses

Autor(es)

Santos, C. N. ^{[1, 2, 3]} ; Mohr, D. ^[4] ; Silva, W. F. ^[5] ; de Camargo, A. S. S. ^{[4, 3]} ; Eckert, H. ^[4] ; Li, M. S. ^[3] ; Vermelho, M. V. D. ^[5] ; Hernandes, A. C. ^[3] ; Ibanez, A. ^{[1, 2]} ; Jacinto, C. ^[5]

Afiliação do(s) autor(es)

^[1] CNRS, Inst Neel, F-38042 Grenoble 9 - France

^[2] Univ Grenoble 1, F-38042 Grenoble 9 - France

^[3] Univ Sao Paulo, Inst Fis Sao Carlos, BR-13560960 Sao Paulo - Brazil

^[4] Univ Munster, Inst Phys Chem, D-48149 Munster - Germany

^[5] Univ Fed Alagoas, Inst Fis, BR-57072970 Maceio, Alagoas - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Journal of Applied Physics; v. 106, n. 2 JUL 15 2009.
• Citações Web of Science: 14

Resumo

In this work we performed a thorough spectroscopic and thermo-optical investigation of yttrium aluminoborate glasses doped with neodymium ions. A set of samples, prepared by the conventional melt-quenching technique and with Nd2O3 concentrations varying from 0.1 to 0.75 mol %, were characterized by ground state absorption, photoluminescence, excited state lifetime measurements, and thermal lens technique. For the neodymium emission at 1064 nm (F-4(3/2) -> I-4(11/2) transition), no significant luminescence concentration quenching was observed and the experimental lifetime values ranged around 70 mu s. The obtained values of thermal conductivity and diffusivity of approximately 10.3 x 10(-3) W / cm K and 4.0 x 10(-3) cm(2) / s, respectively, are comparable to those of commercial laser glasses. Moreover, the fluorescence quantum efficiency of the glasses, calculated using the Judd-Ofelt formalism and luminescence decay, lies in the range from 0.28 to 0.32, larger than the typical values obtained for Nd3+ doped YAl3(BO3)(4) crystals. (c) 2009 American Institute of Physics. {[}DOI: 10.1063/1.3176503] (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