| Full text | |
| Author(s): |
Pelosi, A. G.
[1]
;
Santos, S. N. C.
[1]
;
Dipold, J.
[1, 2]
;
Andrade, M. B.
[1]
;
Hernandes, A. C.
[1]
;
Almeida, J. M. P.
[1, 3]
;
Mendonca, C. R.
[1]
Total Authors: 7
|
| Affiliation: | [1] Univ Sao Paulo, Sao Carlos Inst Phys, POB 369, BR-13560970 Sao Carlos, SP - Brazil
[2] IPEN CNEN SP, Inst Pesquisas Energet & Nucl, Ctr Lasers & Aplicacoes, 2242 A Prof Lineu Prestes, Sao Paulo, SP - Brazil
[3] Univ Sao Paulo, Sao Carlos Sch Engn, Dept Mat Engn, Av Joao Dagnone 1100, BR-13563120 Sao Carlos, SP - Brazil
Total Affiliations: 3
|
| Document type: | Journal article |
| Source: | Journal of Alloys and Compounds; v. 878, OCT 15 2021. |
| Web of Science Citations: | 1 |
| Abstract | |
This work investigates the influence of transition metals oxides (Ta2O5 and ZrO2) on the nonlinear refraction of niobium-borotellurite glasses prepared by melt-quenching technique. The closed-aperture Z-scan technique was used to measure the nonlinear refractive index (n(2)) spectrum from 470 nm to 800 nm. Also, the BGO (Boling, Glass, and Owyoung) approach was used to model nonlinear spectra, considering the oxygens present in the sample as the major contribution to the nonlinearity. The samples' molar electronic polarizability was determined to further understanding the effect of the transition metals oxides on the optical properties. Structural analysis was performed by differential scanning calorimetry, Raman and Infrared spectroscopies. The results indicate that although the modifier oxides affect the structural units and glass polarizability, they are not enough to change the behavior of the nonlinear refractive index spectra, being the glass-matrix the main responsible for optical nonlinearity in the system studied here. (C) 2021 Elsevier B.V. All rights reserved. (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 |