Time evolution of parametric instability in large-scale gravitational-wave interferometers

Stefan Danilishin, S.P. Vyatchanin, David Blair, Li Ju, Chunnong Zhao

    Research output: Contribution to journalArticle

    7 Citations (Scopus)

    Abstract

    © 2014 American Physical Society. We present a study of three-mode parametric instability in large-scale gravitational-wave detectors. Previous work used a linearized model to study the onset of instability. This paper presents a nonlinear study of this phenomenon, which shows that the initial stage of an exponential rise of the amplitudes of a higher-order optical mode and the mechanical internal mode of the mirror is followed by a saturation phase, in which all three participating modes reach a new equilibrium state with constant oscillation amplitudes. Results suggest that stable operation of interferometers may be possible in the presence of such instabilities, thereby simplifying the task of suppression.
    Original languageEnglish
    Pages (from-to)122008
    JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
    Volume90
    Issue number12
    DOIs
    Publication statusPublished - 29 Dec 2014

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