Tenfold reduction of Brownian noise in high-reflectivity optical coatings

  title={Tenfold reduction of Brownian noise in high-reflectivity optical coatings},
  author={Garrett Cole and Wei Zhang and Michael. J. Martin and Jun Ye and Markus Aspelmeyer},
Thermally induced fluctuations impose a fundamental limit on precision measurement. In optical interferometry, the current bounds of stability and sensitivity are dictated by the excess mechanical damping of the high-reflectivity coatings that comprise the cavity end mirrors. Over the last decade, the dissipation of these amorphous multilayer reflectors has at best been reduced by a factor of two. Here, we demonstrate a new paradigm in optical coating technology based on directbonded… CONTINUE READING
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