期刊
JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS
卷 43, 期 9A, 页码 6138-6141出版社
JAPAN SOC APPLIED PHYSICS
DOI: 10.1143/JJAP.43.6138
关键词
microsphere; whispering-gallery modes; scattering spectra measurement; frequency tuning; temperature control
We demonstrate frequency tuning of whispering-gallery mode resonances in a fused-silica microsphere by means of temperature control. Scattering spectra of the microsphere are measured using a tunable narrow-linewidth diode laser, and the frequency scale is precisely calibrated from a simultaneously observed spectrum of rubidium vapor. The resonant frequencies of whispering-gallery modes can be varied linearly by temperature elevation and lowering, at a rate of -2.6 GHz/K for a 190 mum sphere.
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