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Effects of modifier oxides in the nonlinear refractive index of niobium-borotellurite glasses
- Source :
- Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual), Universidade de São Paulo (USP), instacron:USP
- Publication Year :
- 2021
-
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 (n2) 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.
- Subjects :
- VIDRO CERÂMICO
Materials science
Infrared
Niobium
Analytical chemistry
chemistry.chemical_element
02 engineering and technology
010402 general chemistry
01 natural sciences
Spectral line
symbols.namesake
Differential scanning calorimetry
Transition metal
Polarizability
Materials Chemistry
Physics::Chemical Physics
Mechanical Engineering
Metals and Alloys
021001 nanoscience & nanotechnology
0104 chemical sciences
Nonlinear system
chemistry
Mechanics of Materials
symbols
0210 nano-technology
Raman spectroscopy
Subjects
Details
- Database :
- OpenAIRE
- Journal :
- Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual), Universidade de São Paulo (USP), instacron:USP
- Accession number :
- edsair.doi.dedup.....f9077dad023870065d5285e7ed7f4702