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arXiv · 1102.4227

Thermal-noise limited laser stabilization to a crystalline whispering-gallery-mode resonator

J. Alnis·A. Schliesser·C. Y. Wang·J. Hofer·T. J. Kippenberg·T. W. Hänsch
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Abstract

We have stabilized an external cavity diode laser to a whispering gallery mode resonator formed by a protrusion of a single-crystal magnesiumdifluoride cylinder. The cylinder's compact dimensions (<1 cm^3) reduce the sensitivity to vibrations and simplify the stabilization of its temperature in a compact setup. In a comparison to an ultrastable laser used for precision metrology we determine a minimum Allan deviation of 20 Hz, corresponding to a relative Allan deviation of 6*10^-14, at an integration time of 100 ms. This level of instability is compatible with the limits imposed by fundamental fluctuations of the material's refractive index at room temperature.

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J. Alnis, A. Schliesser, C. Y. Wang, J. Hofer, T. J. Kippenberg, T. W. Hänsch. 2011-02-21. Thermal-noise limited laser stabilization to a crystalline whispering-gallery-mode resonator. https://arxiv.org/abs/1102.4227

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