Hüseyin Can Çamiçi, V.A.G. Rivera, Théo Guérineau, Sophie LaRochelle, Younès Messaddeq
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引用次数: 0
Abstract
Optical properties of novel Er3+-doped, Er3+/Yb3+ and Er3+/Tm3+ co-doped and Er3+/Tm3+/Yb3+ tri-doped bismuth-germanate glasses were fabricated. Thermal characterization by differential scanning calorimetry showed the suitability of the glass for fiber drawing. Tri-doped sample presented a broadband luminescence spectrum ranging from 1450 to 2100 nm when it was excited by 980 and 1480 nm laser diodes. Energy transfer mechanisms from the donor (Yb3+, Er3+) to acceptor (Er3+, Tm3+) ions were found out to be the cause of the intense luminescence with broad bandwidth which can be tailored through doping content and concentration. It was observed that the Tm3+ addition helps broadening the luminescence spectrum, while the Yb3+ incorporation enhances the emission intensity. This study provides insightful contributions to the possibility of signal amplification in L + U-bands and beyond, up to 2100 nm.
期刊介绍:
The purpose of the Journal of Luminescence is to provide a means of communication between scientists in different disciplines who share a common interest in the electronic excited states of molecular, ionic and covalent systems, whether crystalline, amorphous, or liquid.
We invite original papers and reviews on such subjects as: exciton and polariton dynamics, dynamics of localized excited states, energy and charge transport in ordered and disordered systems, radiative and non-radiative recombination, relaxation processes, vibronic interactions in electronic excited states, photochemistry in condensed systems, excited state resonance, double resonance, spin dynamics, selective excitation spectroscopy, hole burning, coherent processes in excited states, (e.g. coherent optical transients, photon echoes, transient gratings), multiphoton processes, optical bistability, photochromism, and new techniques for the study of excited states. This list is not intended to be exhaustive. Papers in the traditional areas of optical spectroscopy (absorption, MCD, luminescence, Raman scattering) are welcome. Papers on applications (phosphors, scintillators, electro- and cathodo-luminescence, radiography, bioimaging, solar energy, energy conversion, etc.) are also welcome if they present results of scientific, rather than only technological interest. However, papers containing purely theoretical results, not related to phenomena in the excited states, as well as papers using luminescence spectroscopy to perform routine analytical chemistry or biochemistry procedures, are outside the scope of the journal. Some exceptions will be possible at the discretion of the editors.