17 May 2018 Glass photonic structures fabricated by sol-gel route
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To emphasize the scientific and technological interest in the silica-based glassy systems and the versatility of the sol-gel route, nano and micrometer scale structures are discussed focusing the attention mainly on the rare-earth-activated materials and their spectroscopic characterization. We have demonstrated that various SiO2-based binary systems can be successfully employed for the fabrication of amorphous planar waveguides, glass–ceramic waveguides, and tapered rib waveguide laser. Different technological processes allowed to realize Er3+ -activated microspheres that can be exploited as microresonator and it has been evidenced that through specific coating it is possible to modify modal free spectral range and/or modal dispersion of the microresonator and achieve laser action. In the case of rare-earth-doped 3-D colloidal crystals in different configurations (direct and inverse one), it has been shown that the relaxation dynamics of the electronic states can be engineered.
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R. Tomala, R. Tomala, A. Lukowiak, A. Lukowiak, B. Borak, B. Borak, A. Chiappini, A. Chiappini, W. Blanc, W. Blanc, M. Ferrari, M. Ferrari, A. Bouajaj, A. Bouajaj, D. Ristic, D. Ristic, S. Taccheo, S. Taccheo, W. Strek, W. Strek, "Glass photonic structures fabricated by sol-gel route", Proc. SPIE 10683, Fiber Lasers and Glass Photonics: Materials through Applications, 106832P (17 May 2018); doi: 10.1117/12.2306449; https://doi.org/10.1117/12.2306449


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