| Texto completo | |
| Autor(es): |
Santos, S. N. C.
[1]
;
Paula, K. T.
[1]
;
Almeida, J. M. P.
[1, 2]
;
Hernandes, A. C.
[1]
;
Mendonca, C. R.
[1]
Número total de Autores: 5
|
| Afiliação do(s) autor(es): | [1] Univ Sao Paulo, Sao Carlos Inst Phys, POB 369, BR-13560970 Sao Carlos, SP - Brazil
[2] Univ Sao Paulo, Sao Carlos Sch Engn, Dept Mat Engn, Av Joao Dagnone 1100, BR-13563120 Sao Carlos, SP - Brazil
Número total de Afiliações: 2
|
| Tipo de documento: | Artigo Científico |
| Fonte: | Journal of Non-Crystalline Solids; v. 524, NOV 15 2019. |
| Citações Web of Science: | 0 |
| Resumo | |
This paper reports a study on linear and nonlinear optical properties in a series of lithium-calcium tetraborate (CaLiBO) glasses in the presence of two rare earth ions, Tb3+ and Yb3+. The nonlinear index of refraction (n(2)) was determined in a wide wavelength range (470-1500 nm) through femtosecond Z-scan technique. Such results were modeled by KO approach, in which the optical nonlinearity was related to the oxygens present in the glasses. Also, the molar electronic polarizability evidenced that there is a strong influence of the polarizability of the rare earth ions in the nonlinear optical properties. Thus, we can infer that the cooperation of oxygens and the polarizability of rare earth ions are responsible for the nonlinearity present in the investigated vitreous system. (AU) | |
| Processo FAPESP: | 18/11283-7 - Fotônica não linear: espectroscopia e processamento avançado de materiais |
| Beneficiário: | Cleber Renato Mendonça |
| Modalidade de apoio: | Auxílio à Pesquisa - Temático |