Ultraviolet-assisted frequency trimming of optical microsphere resonators |
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| Authors: | Savchenkov A A Ilchenko V S Handley T Maleki L |
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| Institution: | Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, Pasadena, California 91109, USA. anatoliy.savchenkov@jpl.nasa.gov |
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| Abstract: | We have demonstrated the engineering of a precise shift in the resonance frequency of high-Q (10(8))whispering-gallery modes in microspheres of germanium-doped silica with UV irradiation. With 600 mW of 351-nm radiation from an Ar-ion laser, 18-GHz permanent frequency shifts were obtained for modes of 1550-nm wavelength, enough to tune a resonance over a full free spectral range. |
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