Resonant frequency control of a microspherical cavity by temperature adjustment
Resonant frequency control of a microspherical cavity by temperature adjustment
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DOI：
10.1143/jjap.43.6138
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发表时间：
2004-09-01
期刊：
影响因子：
--
通讯作者：
Sasaki, K
中科院分区：
文献类型：
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作者：
Chiba, A;Fujiwara, H;Sasaki, K
我们演示了通过温度控制在熔融石英微球中的回音壁模式共振的频率调谐。使用可调谐窄线宽二极管激光器测量微球的散射光谱，并且从同时观察到的铷蒸气光谱精确地校准频率标度。回音壁模式的谐振频率可以通过温度升高和降低而线性变化，对于190 μ m的球体，其速率为-2.6 GHz/K。
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.