4 March 2014 Multicolour emission in silica whispering gallery mode microspherical resonators
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High quality factor whispering gallery mode microresonators are ideally suited for nonlinear optical interactions. We demonstrate x(3)-based nonlinear interactions in silica microspheres, consisting in third harmonic generation and Raman assisted TSFG in the visible. A tunable, CW multicolour emission has been quantitatively measured controlling the cavity mode dispersion by choosing suitable sized microspheres and exciting the proper modes for efficient frequency conversion.
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Daniele Farnesi, Daniele Farnesi, Andrea Barucci, Andrea Barucci, Simone Berneschi, Simone Berneschi, Giancarlo C. Righini, Giancarlo C. Righini, Silvia Soria, Silvia Soria, Gualtiero Nunzi Conti, Gualtiero Nunzi Conti, "Multicolour emission in silica whispering gallery mode microspherical resonators", Proc. SPIE 8960, Laser Resonators, Microresonators, and Beam Control XVI, 896008 (4 March 2014); doi: 10.1117/12.2039745; https://doi.org/10.1117/12.2039745

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