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17 May 2018 Glass based microresonators
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Surface tension induced whispering gallery mode (WGM) micro-resonators can be made in glass with very high quality factor Q. In fact, low losses amorphous glassy dielectrics can be easily shaped in high-surface-quality spheroids by thermal reflow. Since the pioneering works on fused silica microspheres showing several orders of magnitude higher Qs compared to previous findings, a large number of studies have been performed in the last years on glass based microresonators. Main results include frequency conversion through non-linear effects and micro-lasers, filtering and optical switching, RF photonics and sensing. Besides spheres, alternatives shapes like micro-bottles and micro-bubbles have been implemented to improve the resonator performances depending on the application. Other glasses rather than silica have been considered in order to enhance properties like transparency windows and non-linear effects. This presentation will review the main results we obtained on micro-laser sources in erbium doped microcavities, parametric conversion in silica microspheres, and stimulated Brillouin scattering in silica microbubbles. Potentials of coated silica microspheres implemented to add the functionalities of the coating material will be also presented.
Conference Presentation
© (2018) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
S. Berneschi, F. Cosi, D. Farnesi, G. Frigenti, G. C. Righini, S. Pelli, S. Soria, F. Baldini, F. Prudenzano, G. Persichetti, R. Bernini, Y. Dumeige, P. Féron, D. Ristić, M. Ivanda, and G. Nunzi Conti "Glass based microresonators", Proc. SPIE 10683, Fiber Lasers and Glass Photonics: Materials through Applications, 106830F (17 May 2018);


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