Multichannel transition emissions of Dy3 in fiber-adaptive germanium tellurite glasses

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

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Original languageEnglish
Article number123507
Journal / PublicationJournal of Applied Physics
Volume113
Issue number12
Publication statusPublished - 28 Mar 2013

Abstract

Multichannel transition visible and near-infrared (NIR) fluorescences have been captured in Dy3-doped fiber-adaptive Na2O-ZnO-PbO- GeO2-TeO2 glasses. The maximum stimulated emission cross-sections σem-max were derived to be 0.33 × 10 -21, 3.66 × 10-21, and 0.67 × 10-21 cm2 for conventional visible emissions assigned to 4F9/26HJ (J 15/2, 13/2, and 11/2) transitions, respectively. Infrequent multi-peak NIR emissions were recorded in the spectral range of 900-1500 nm, among which the values of σem-max were solved to be 1.05 × 10-22 and 1.56 × 10-22 cm2 for ∼1.02 and ∼1.18 μm emission bands. Internal quantum efficiency for the 4F9/2 level and external quantum yield for visible emissions of Dy3 were determined to be 88.44 and 12.38, severally. Effective multichannel radiative emissions reveal a potential in developing fiber-lighting sources, tunable lasers, and NIR optical amplifiers. © 2013 American Institute of Physics.