Dependence of the saturation intensity with the dopant ion concentration: Application to the study of nonlinear optical properties in Nd-doped phosphate glass matrix

The effect of ion concentration on the saturation intensity, Is, was investigated and its effect on the evaluation of nonlinear optical properties was discussed. The suggested experimental approach points out a more accurate way to obtain Is. The value of Is in the limit of low concentration and low...

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Bibliographic Details
Published inJournal of luminescence Vol. 207; pp. 374 - 377
Main Authors de Souza, Jackson M., Messias, Djalmir N., Dantas, Noelio O., Silva, Anielle C.A., Pilla, Viviane, Andrade, Acácio A.
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.03.2019
Subjects
Amorphous materials
Nonlinear optics
Optical materials
Nonlinear optics
Optical materials
Amorphous materials
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Summary:The effect of ion concentration on the saturation intensity, Is, was investigated and its effect on the evaluation of nonlinear optical properties was discussed. The suggested experimental approach points out a more accurate way to obtain Is. The value of Is in the limit of low concentration and low incident intensity was obtained as (266 ± 14) KW/cm2 at 514 nm. Through time resolved Z-scan the nonlinear refractive index, n2, of Nd-doped phosphate glass could be evaluated for different Nd concentrations. Finally, the n2 and Is values were used to determine the polarizability difference between ground and excited states as Δα = (2.6 ± 0.2) × 10−26 cm3, for Nd3+ ions in this glass matrix. [Display omitted]
ISSN:0022-2313
1872-7883
DOI:10.1016/j.jlumin.2018.11.040