Fluorescence features of Tm3+-doped multicomponent borosilicate and borotellurite glasses for blue laser and S-band optical amplifier applications
- Authors
- Lakshminarayana, Gandham; Caldino, Ulises G.; Meza-Rocha, Abraham Nehemías; Lira, A. C.; Rao, P. Venkateswara; Singh, Vijay; Dahshan, A.; Kityk, Iwan V.; Lee, Dong-Eun; Yoon, Jonghun; Park, Taejoon
- Issue Date
- Oct-2019
- Publisher
- ELSEVIER
- Keywords
- Multicomponent borosilicate glass; Multicomponent borotellurite glass; Tm3+: 1458 nm fluorescence; 453 nm blue laser; S-band optical amplifier
- Citation
- OPTICAL MATERIALS, v.96, pp.1 - 10
- Indexed
- SCIE
SCOPUS
- Journal Title
- OPTICAL MATERIALS
- Volume
- 96
- Start Page
- 1
- End Page
- 10
- URI
- https://scholarworks.bwise.kr/erica/handle/2021.sw.erica/2128
- DOI
- 10.1016/j.optmat.2019.109354
- ISSN
- 0925-3467
- Abstract
- Novel B2O3-SiO2-Al2O3-ZnO-Li2O/MgO and B2O3-TeO2-PbO-ZnO-Li2O-Na2O glasses with different concentrations of Tm2O3 were synthesized by using the melt-quench method. All the fabricated samples have been characterized by visible emission spectra and decay times, including near-infrared (NIR) luminescence measurements. For 0.5 mol% Tm3+-doped borotellurite glass, several radiative parameters are evaluated using the Judd-Ofelt parameters. The intensity of all the visible emission bands increased with the increase of Tm2O3 concentration up to 0.5 mol%, and beyond this doping content, luminescence concentration quenching takes place. The luminescence intensity quenching is attributed to energy transfer (ET) processes through cross-relaxation (CR) channels. The visible luminescence decay curves were well fit with a single exponential (for Tm3+: D-1(2) level) and double exponential (for Tm3+: (1)G(4) level) functions for the multicomponent borosilicate samples, while Inokuti-Hirayama model was used for the multicomponent borotellurite glass D-1(2) level decay time fit. The derived decay lifetimes of the D-1(2) level are found to be much shorter than that of the (1)G(4) level. In Li2O (alkali) or MgO (alkaline) containing borosilicate samples, pumped under 808 nm laser diode, the H-3(4) -> F-3(4) (1.458 mu m) emission intensity increased from 0.1 to 2.0 mol% Tm3+ ion concentration, indicating negligible CR processes. The computed Full-Width at Half-Maximum (FWHM) values for the 1458 nm emission in 2.0 mol% Tm3+-doped Li and Mg series borosilicate samples are 117 and 125 nm, respectively, while the FWHM value for 0.5 mol% Tm2O3 content doped borotellurite glass is 118 nm. Following the analyzed visible and NIR optical results, the fabricated Tm3+ glasses could be useful for blue laser and S-band optical amplifier applications.
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