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6 February 2012 Spherical resonators coated by glass and glass-ceramic films
Davor Ristic, Andrea Chiappini, Alessandro Chiasera, Cristina Armellini, Alessandro Carpentiero, Maurizio Mazzola, Enrico Moser, Stefano Varas, Simone Berneschi, Gualtiero Nunzi Conti, Stefano Pelli, Silvia Soria, Giorgio Speranza, Lorenzo Lunelli, Cecilia Pederzolli, Francesco Prudenzano, Patrice Feron, Mile Ivanda, Gilles Cibiel, Giancarlo C. Righini, Maurizio Ferrari
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Proceedings Volume 8236, Laser Resonators, Microresonators, and Beam Control XIV; 82361W (2012) https://doi.org/10.1117/12.910104
Event: SPIE LASE, 2012, San Francisco, California, United States
Abstract
Coating of spherical microresonators is a very promising technique for optimizing their optical properties. Optical coatings are constituted by glasses, polymer, and glass ceramics, passive or activated by luminescent species, Glass ceramic activated by rare earth ions are nanocomposite systems that exhibit specific morphologic, structural and spectroscopic properties allowing to develop interesting new physical concepts, for instance the mechanism related to the transparency, as well as novel photonic devices based on the enhancement of the luminescence. At the state of art the fabrication techniques based on bottom-up and top-down approaches appear to be viable although a specific effort is required to achieve the necessary reliability and reproducibility of the preparation protocols. In particular, the dependence of the final product on the specific parent glass and on the employed synthesis still remain an important task of the research in material science. Looking to application, the enhanced spectroscopic properties typical of glass ceramic in respect to those of the amorphous structures constitute an important point for the development of integrated optics devices, including coating of spherical microresonators. Here we present a review regarding spherical microresonators coated by glass and glass-ceramic film activated by Er3+ ions. Er3+ ions appear to be embedded in a crystalline or amorphous environment and the lifetime dynamic is influenced by the geometry and by the morphology of the system. Photoluminescence results and morphologic properties are discussed for both amorphous and glass ceramic films.
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Davor Ristic, Andrea Chiappini, Alessandro Chiasera, Cristina Armellini, Alessandro Carpentiero, Maurizio Mazzola, Enrico Moser, Stefano Varas, Simone Berneschi, Gualtiero Nunzi Conti, Stefano Pelli, Silvia Soria, Giorgio Speranza, Lorenzo Lunelli, Cecilia Pederzolli, Francesco Prudenzano, Patrice Feron, Mile Ivanda, Gilles Cibiel, Giancarlo C. Righini, and Maurizio Ferrari "Spherical resonators coated by glass and glass-ceramic films", Proc. SPIE 8236, Laser Resonators, Microresonators, and Beam Control XIV, 82361W (6 February 2012); https://doi.org/10.1117/12.910104
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KEYWORDS
Coating
Glasses
Microresonators
Spherical lenses
Ions
Waveguides
Luminescence
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