Universiti Teknologi Malaysia Institutional Repository

Spectroscopic properties of Sm3+ doped sodium-tellurite glasses: Judd-Ofelt analysis

Mawlud, S. Q. and Ameen, M. M. and Sahar, M. R. and Mahraz, Z. A. S. (2017) Spectroscopic properties of Sm3+ doped sodium-tellurite glasses: Judd-Ofelt analysis. Optical Materials, 69 . pp. 318-327. ISSN 0925-3466

Full text not available from this repository.

Official URL: http://dx.doi.org/10.1016/j.optmat.2017.04.022

Abstract

Modifying the optical response of rare earth doped inorganic glasses for diverse optical applications is the current challenge in materials science and technology. We report the enhancement of the visible emissions of the Sm3+ ions doped sodium-tellurite (TNS) glasses. The impacts of varying Sm3+ ions concentration on the spectroscopic properties of such glass samples are evaluated. Synthesized glass samples are characterized via emission and absorption measurements. The UV–Vis–NIR absorption spectra revealed nine absorption peaks which are assigned to the transitions from the ground level (6H5/2) to 6P3/2, 4I11/2, 6F11/2, 6F9/2, 6F7/2, 6F5/2, 6F3/2, 6H15/2 and 6F1/2 excited energy levels of Sm3+ ions. Emission spectra of the prepared glass under 404 nm excitation wavelength consisted of four bands centered at 561 nm, 598 nm, 643 nm and 704 nm which are originated from 4G5/2→6HJ (J = 5/2, 7/2, 9/2 and 11/2) transitions. The experimental oscillator strengths, fexp are calculated from the area under absorption bands. Using Judd-Ofelt theory and fit process of least square, the phenomenological intensity parameters Ωλ (λ = 2, 4, 6) are obtained. In order to evaluate potential applications of Sm3+ ions in telluride glasses, the spectroscopic parameters: radiative transition probability AR, branching ratio BR, radiative life time τr and stimulated emission cross section σλ for each band are calculated. These glass compositions could be a potential candidate for lasers.

Item Type:Article
Uncontrolled Keywords:luminescence. optical absorption. samarium ions
Subjects:Q Science > QC Physics
Divisions:Science
ID Code:80579
Deposited By: Narimah Nawil
Deposited On:27 Jun 2019 14:08
Last Modified:27 Jun 2019 14:08

Repository Staff Only: item control page