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Phys Rev Lett
; 114(16): 161102, 2015 Apr 24.
Article
in English
| MEDLINE
| ID: mdl-25955042
ABSTRACT
Parametric instabilities have long been studied as a potentially limiting effect in high-power interferometric gravitational wave detectors. Until now, however, these instabilities have never been observed in a kilometer-scale interferometer. In this Letter, we describe the first observation of parametric instability in a gravitational wave detector, and the means by which it has been removed as a barrier to progress.