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Upconversion and near infrared emission properties of a novel Er3+/Yb3+ codoped fluoro-tellurite glass
- Source :
- Journal of Alloys and Compounds, Journal of Alloys and Compounds, Elsevier, 2016, 682, pp.115-123. ⟨10.1016/j.jallcom.2016.04.112⟩
- Publication Year :
- 2016
- Publisher :
- Elsevier BV, 2016.
-
Abstract
- A series of Er 3+ /Yb 3+ co-doped novel fluoro-tellurite glasses was prepared following the melt quenching technique. Raman spectroscopy was used to analyze the functional groups present in the glass network and to determine the phonon energy of this glassy system. The optical properties of the glasses were characterized by different techniques such as optical absorption, photoluminescence (visible and near infrared) and time-resolved spectroscopy. Using optical absorption data and Judd-Ofelt theory, several spectroscopic parameters such as transition probabilities, radiative lifetimes and branching ratios were estimated for different Yb 2 O 3 contents. The up-conversion process, after excitation with an infrared radiation at 980 nm, was examined and the different mechanisms involved in these emissions such as excited state absorption, energy transfer processes and cross-relaxation are discussed. The emission cross-section corresponding to the 4 I 13/2 level was calculated using McCumber theory. The experimental lifetime and the quantum efficiency corresponding to the 4 I 13/2 level were also determined to evaluate the appropriateness of the host matrix for the fabrication of laser materials and broadband amplifiers. It was found that the effective bandwidth is larger and quantum efficiency and the emission cross-section are higher than those obtained for others vitreous systems, which suggests that the proposed glasses can be nominated as suitable host material for new Er 3+ /Yb 3+ codoped broadband optical amplifiers and for the development of optical devices.
- Subjects :
- Materials science
Photoluminescence
Infrared
Analytical chemistry
02 engineering and technology
[CHIM.INOR]Chemical Sciences/Inorganic chemistry
010402 general chemistry
7. Clean energy
01 natural sciences
law.invention
symbols.namesake
law
Materials Chemistry
Spectroscopy
ComputingMilieux_MISCELLANEOUS
Optical amplifier
business.industry
Mechanical Engineering
Metals and Alloys
[CHIM.MATE]Chemical Sciences/Material chemistry
021001 nanoscience & nanotechnology
Laser
Photon upconversion
0104 chemical sciences
Mechanics of Materials
symbols
Optoelectronics
Quantum efficiency
0210 nano-technology
business
Raman spectroscopy
Subjects
Details
- ISSN :
- 09258388
- Volume :
- 682
- Database :
- OpenAIRE
- Journal :
- Journal of Alloys and Compounds
- Accession number :
- edsair.doi.dedup.....c2a5161f9bdaf43d27740a37cc04692e