An ultrahigh sensitivity sapphire transducer for vibration measurements
- 14 June 1994
- journal article
- Published by IOP Publishing in Journal of Physics D: Applied Physics
- Vol. 27 (6) , 1150-1155
- https://doi.org/10.1088/0022-3727/27/6/012
Abstract
Sapphire dielectric resonator (SDR) transducers have been shown to achieve 10-15 m Hz-1/2 sensitivity for vibration frequencies above 100 Hz by using an ultrastable sapphire loaded cavity oscillator as the pump source. This paper describes an interferometric transducer configuration which avoids the need for an ultralow noise oscillator, but maintains existing sensitivity. An initial performance of the transducer with the new configuration is presented.Keywords
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