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A novel synthesis for a titanate nanosheets loaded nanocomposite has been developed. On this basis, a multifunctional material for optical applications has been fabricated with tunable refractive index, improved processing behavior and luminescent properties imparted by the incorporation of semiconductor quantum dots.Titanate synthesis, host material choice and quantum dots functionalization have...
Er3+-acticated silica-hafnia glass-ceramic waveguides were fabricated by bottom-up and top-down approaches. The pros and cons of the procedures in terms of optical, spectroscopic and structural properties are reported, in particular regarding attenuation coefficient, NIR emission, and local environment for the rare-earth ions. The results confirm the significance of SiO2-HfO2 glass ceramic waveguides...
Design and synthesis of new organic luminophores with desired structure and photophysical properties for application as fluorescent markers for noble metal nanoparticles is performed. The novel luminophores are 4-methoxy- and 4-pyrollidine derivatives of 1,8-naphthalimide bearing at the imide N atom long methylene chain with SH end groups, which enables their covalent binding to noble metals. The...
Paper reports recent advances in optical nanomaterials, planar microcavity, and spherical microresonators. Bottom-up fabrication and optical assessment of Er3+-activated SiO2-HfO2 waveguide glass ceramic is presented. Concerning confined structures, fabrication by radio-frequency sputtering (RFS) technique of an Er3+-activated microcavity with a quality factor of 171 using oxide-based dielectric materials...
The aim of this lecture is to highlight some advances in erbium-activated silica-based photonic systems, where suitable geometries and appropriate fabrication protocols allow tailoring and enhancement of optical and spectroscopic properties. In particular, the following topics are presented: (i) rare earth-activated glass ceramics planar waveguides; (ii) Er3+-activated Ag exchanged silicate glass;...
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