Tran Ngoc, Vu Phi Tuyen, Phan Van Do

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Abstract

Abstract: Samarium doped B2O3-Na2O-Li2O (BNaLi) [u1] glasses with concentration of 0.5 mol% were prepared by the conventional melting procedure. Optical absorption, excitation, luminescence spectra and lifetime have been measured at room temperature. Judd – Ofelt (JO) theory is used to study the spectral properties and to calculate the radiative transition probabilities. The predicted[u2]  branching ratios (βR), radiative lifetime (ιR) and stimulated emission cross-sections [u3] (σp)) of the 4G5/2 excited level are reported.

Keywords: Borate glass, J-O theory.

 [u1](BNaLi) borate

 [u2]predicted

 [u3]cross-sections

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