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Wide-band measurement of mechanical thermal noise using a laser interferometer

✍ Scribed by Mariko Kajima; Nobuhiro Kusumi; Shigenori Moriwaki; Norikatsu Mio

Publisher
Elsevier Science
Year
1999
Tongue
English
Weight
173 KB
Volume
263
Category
Article
ISSN
0375-9601

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We present a new method for estimating the thermal noise at off-resonant frequencies in a mechanical system. In this method, the mechanical conductance is directly measured at anti-resonant frequencies, and then the fluctuation-dissipation theorem is applied to the measured conductance in order to e