| Full text | |
| Author(s): |
Santos, S. N. C.
[1]
;
Paula, K. T.
[1]
;
Almeida, J. M. P.
[1, 2]
;
Hernandes, A. C.
[1]
;
Mendonca, C. R.
[1]
Total Authors: 5
|
| Affiliation: | [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
Total Affiliations: 2
|
| Document type: | Journal article |
| Source: | Journal of Non-Crystalline Solids; v. 524, NOV 15 2019. |
| Web of Science Citations: | 0 |
| Abstract | |
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) | |
| FAPESP's process: | 18/11283-7 - Nonlinear photonics: spectroscopy and advanced processing of materials |
| Grantee: | Cleber Renato Mendonça |
| Support Opportunities: | Research Projects - Thematic Grants |