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Bottle microresonator with actively stabilized evanescent coupling
1Vienna Center for Quantum Science and Technology, TU Wien-Atominstitut, Vienna, Austria.
Optics Letters
|September 3, 2011
Abstract:
The evanescent coupling of light between a whispering-gallery-mode bottle microresonator and a subwavelength-diameter coupling fiber is actively stabilized by means of the Pound-Drever-Hall technique. We demonstrate the stabilization of a critically coupled resonator with a control bandwidth of 0.1 Hz, yielding a residual transmission of (9±3)×10(-3) for more than an hour. Simultaneously, the frequency of the resonator mode is actively stabilized.
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