Composition dependence of the electro-optic properties of iron doped lithium niobate crystals
International audience
International audience
Due to various excellent properties such as nonlinear optical, electro-optical,piezoelectric, photorefractive ones Lithium Niobate (LN) is one of the mostused ferroelectrics having a wide number of applications such as frequencydoubling, phase-conjugation, holographic storage, SAW sensors.Furthermore, the possibility of doping with rare-earth ions ...
Different concentration of Ho3+ions doped lithium niobate powders andalkoxides were synthesized by solid and wet reactions respectively. Obtainedpowders and fired alkoxides were investigated by means of X-ray diffractionanalyses and corresponding lattice parameters were calculated. Thin films ofLiNbO3:Ho3+ were grown by Sol-Gel method on a sapphire...
International audience
International audience
— Surface acoustic waves (SAW) technology is very promising to achieve wireless sensors able to operate in high temperature environments up to possibly 1000°C. However, there is currently a bottleneck related to the packaging of such sensors. The current high-temperature packaging solutions can withstand 600°C at most. This limitation could be over...
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Refugees tend to have greater vulnerability compared to the general population reporting greater need for physical, emotional, or dental problems compared to the general population. Despite the importance of creating strong primary care supports for these patients, it has been demonstrated that there is a significant gap in accessing primary care p...
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L’alliage de Nitrure de Gallium et d’Indium (InGaN) est devenu au cours des dernières années un semi-conducteur important pour la réalisation de composants optoélectroniques, du fait de sa bande interdite modulable en fonction de la composition d’indium, entre 0.7 eV à 3.4 eV. Ceci permet l’absorption d’une grande partie du spectre solaire et fait ...