Lasing transition (F-4(3/2)-> I-4(11/2)) at 1.06 mu m in neodymium oxide doped lithium boro tellurite glass

• Tipo: Artigo em Revista Científica Internacional
• Data: 2010

Autores

J. Azevedo (Autor) FCUP; J. Coelho (Autor) FCUP; G. Hungerford (Autor) Outra; N. Sooraj Hussain (Autor) FCUP

Revista

Título: Physica B: Condensed Matter

Vol. 405 Nº 22

Páginas: 4696-4701

ISSN: 0921-4526

Editora: Elsevier

Indexação

ISI Web of Science

Classificação Científica

FOS: Ciências exactas e naturais > Física

Outras Informações

Abstract (EN): Lithium boro tellurite (LBT) glass doped with neodymium oxide has been prepared and characterized by XRD, FTIR and SEM analysis. Judd-Ofelt theory has been applied to evaluate the best fit intensity parameters. The trend found in the JO intensity parameter is ohm(6)> ohm(4)> ohm(2) If ohm(6)> ohm(4), the glass system is favourable for the lasing emission F-4(3/2)-> I-4(11/2) in the IR wavelength. Pumping with a LED excitation source at 495 nm, we observed an intense and sharp NIR lasing transition F-4(3/2)-> I-4(11/2) at 1065 nm. Stimulated emission cross sections (sigma(E)(p) x 10(-20) CM2) for NIR lasing transitions F-4(3/2)-> 4I(11/2) and 13/2 are 2.67 and 0.83, respectively. Similarly, the lifetimes (tau(mea),) have also been measured for both NIR emissions and the values are 60.6 and 46.4 mu s for this neodymium oxide doped LBT glass. (C) 2010 Elsevier B.V. All rights reserved.

Idioma: Inglês

Tipo (Avaliação Docente): Científica