Study of the Optical Characteristics of V2O5-Li2OP2O5 Glass System | ||
| Egyptian Journal of Solids | ||
| Article 4, Volume 41, Issue 1 - Serial Number 41, 2018, Pages 33-47 PDF (1.04 M) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/ejs.2018.148252 | ||
| Abstract | ||
| In the last two decades, several applications became more dependent on the nonlinearity phenomena in glasses, for example: laser glass has low nonlinear refractive index (n2), while as higher values serve in optical switching. In this study, Vanadium-Lithium-Phosphate glass samples [V2O5-Li2O-P2O5] were prepared by the melt-quenching technique. The amorphous structure of these glasses is examined by XRD analysis. The recorded reflectance and transmittance were investigated over the range from 20-2500 nm for the five samples. The two parts of the calculated refractive indices are estimated via an analytical technique. The dispersion parameters, such as Sellmeier gap energy based on Wemple and DiDomenico model, dispersion energy, as well as Abbe’s number were deduced. From the obtained results, the parameters for absorption dispersion, namely, the optical energy gap for indirect transition as well as the Urbach energy, were extracted. Moreover, the other parameters such as: the molar refractivity, the reflection loss and density are calculated. The measured optical parameters were found to vary nonlinearly with increasing vanadium oxide (V2O5), in the presence of Li2O in the phosphate matrix. In the aim of enhancing the performance in this glass system, the effects of ascending doping with a transition metal oxide (V2O5) on both the predicted nonlinear and the linear optical parameters, are investigated and analyzed. | ||
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