Free-space cavity optomechanics in a cryogenic environment

Abstract : We present a free-space optomechanical system operating in the 1-K range. The device is made of a high mechanical quality factor micropillar with a high-reflectivity optical coating atop, combined with an ultra-small radius-of-curvature coupling mirror to form a high-finesse Fabry-Perot cavity embedded in a dilution refrigerator. The cavity environment as well as the cryostat have been designed to ensure low vibrations and to preserve micron-level alignment from room temperature
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A. G. Kuhn, J. Teissier, L. Neuhaus, S. Zerkani, E. van Brackel, et al.. Free-space cavity optomechanics in a cryogenic environment. Applied Physics Letters, American Institute of Physics, 2014, 104 (4), ⟨10.1063/1.4863666⟩. ⟨in2p3-01357440⟩

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