A spectrophotometric method for determining linear and predicting nonlinear optical properties of glass substrates

El-Zaiat, El-Sayed

doi:10.1007/s10043-014-0009-x

Cited by 6 publications

(3 citation statements)

References 13 publications

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“…Wemple & DiDomenico (W-D) [30,31] laid a design for the (n) data in a single oscillator model, as a function of the incident photon energy (E) in the transparent region as (12) where (E 0 ) is the so called Sellmeier energy gap [21,32] and (E d ) is the dispersion energy. Conventionally, The single oscillator energy (E 0 ) is related to the average band gap and corresponds to the distance between the centers of gravity of the CB and VB.…”

Section: The Wemple-didomenico Dispersion Relationmentioning

confidence: 99%

“…the optical band gap energy is (E Og ). Plotting the relation between (α E) 1/2 and (E) gives the direct band gap energy, (E Og−d ), while a relation between ( and (E) gives the indirect band gap energy, (E Og−i ) [31].…”

Section: Optical Band Energy ( )mentioning

confidence: 99%

“…In order to evaluate the non-linear part of the refractive index, (n 2 ), the following empirical formula [29,31] is applied:…”

Section: Predicted Nonlinear Optical Parametersmentioning

confidence: 99%

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Study of the Optical Characteristics of V2O5-Li2OP2O5 Glass System

2018

Egyptian Journal of Solids

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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 (n 2), while as higher values serve in optical switching. In this study, Vanadium-Lithium-Phosphate glass samples [V 2 O 5-Li 2 O-P 2 O 5 ] 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 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 (V 2 O 5), in the presence of Li 2 O 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 (V 2 O 5) on both the predicted nonlinear and the linear optical parameters, are investigated and analyzed.

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Section: The Wemple-didomenico Dispersion Relationmentioning

confidence: 99%

Section: Optical Band Energy ( )mentioning

confidence: 99%