Superiority of shortwave transparent glasses with moderate phonon energy in achieving effective radiations from 1D2 level of Pr3+

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

Detail(s)

Original languageEnglish
Pages (from-to)51-60
Journal / PublicationJournal of Luminescence
Volume213
Online published7 May 2019
Publication statusPublished - Sep 2019

Abstract

Radiation-level 1D2 adaptive fluorophosphate glasses (NBFP) have been exhibited and relevant transition emissions of Pr3+ have been quantitatively characterized. Intense visible fluorescence is proved to generate from 1D2 level principally and the quantum yield (QY) of emissions originating from this level is as high as 7.94% in 500–900 nm, indicating the decisive significance of the 1D2 level in reddish-orange fluorescence of NBFP glasses. Effective broadband 1.47 μm near-infrared (NIR) emission ascribed to 1D21G4 transition has been observed, meanwhile, the full-width at half-maximum is obtained to be 141 nm and the maximum stimulated emission cross-section is derived to be 5.75 × 10−21cm2, suggesting the effectiveness of the NIR emission from the initial level 1D2 in the specific NBFP glasses. In view of absolute radiation parameters and fluorescence branch ratios, net emission photon number of the attractive NIR emission is expected to be 4.5 × 1014cps under 453 nm laser pumping with 82.05 mW power, and corresponding QY is anticipated to be 2.0%. High shortwave transparency and moderate phonon energy are confirmed to be two important indicators for exploring suitable host materials in achieving effective radiations from 1D2 level of Pr3+, revealing the forward-looking applications of fluorophosphate glasses as broadband NIR amplifiers and irradiative luminescence sources.

Research Area(s)

  • Fluorophosphate glasses, Moderate phonon energy, Pr3+ ions, Radiations from 1D2 level, Shortwave transparency