High optical power experiments and parametric instability in 80 m Fabry-Perot cavities

    Research output: ThesisDoctoral Thesis

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    Abstract

    Parametric instability at high amplitude is a critical issue in gravitational wave detection. This thesis investigates three-mode optomechanical interactions at high optical power in 80 m Fabry-Perot cavities. As a result, a high-sensitivity transducer is realized by strong coupling between the cavity modes and the test mass mechanical mode. In this thesis, the cavity optical properties and the test mass mechanical properties are characterized, before presenting observation of parametric instability. A dynamical scheme to relieve the parametric instability problem in aLIGO is also demonstrated. In addition, an auto-alignment system to control the test masses is investigated.
    Original languageEnglish
    QualificationDoctor of Philosophy
    Awarding Institution
    • The University of Western Australia
    Award date7 Sep 2016
    Publication statusUnpublished - 2015

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    theses
    cavities
    gravitational waves
    transducers
    alignment
    mechanical properties
    optical properties
    sensitivity
    interactions

    Cite this

    @phdthesis{ce21b6ba1fbf427284386d48ae75f68e,
    title = "High optical power experiments and parametric instability in 80 m Fabry-Perot cavities",
    abstract = "Parametric instability at high amplitude is a critical issue in gravitational wave detection. This thesis investigates three-mode optomechanical interactions at high optical power in 80 m Fabry-Perot cavities. As a result, a high-sensitivity transducer is realized by strong coupling between the cavity modes and the test mass mechanical mode. In this thesis, the cavity optical properties and the test mass mechanical properties are characterized, before presenting observation of parametric instability. A dynamical scheme to relieve the parametric instability problem in aLIGO is also demonstrated. In addition, an auto-alignment system to control the test masses is investigated.",
    keywords = "Gravitational wave, Optical cavity, Laser, Parametric instability, Suspension system, Auto-alignment system",
    author = "Qi Fang",
    year = "2015",
    language = "English",
    school = "The University of Western Australia",

    }

    Fang, Q 2015, 'High optical power experiments and parametric instability in 80 m Fabry-Perot cavities', Doctor of Philosophy, The University of Western Australia.

    TY - THES

    T1 - High optical power experiments and parametric instability in 80 m Fabry-Perot cavities

    AU - Fang, Qi

    PY - 2015

    Y1 - 2015

    N2 - Parametric instability at high amplitude is a critical issue in gravitational wave detection. This thesis investigates three-mode optomechanical interactions at high optical power in 80 m Fabry-Perot cavities. As a result, a high-sensitivity transducer is realized by strong coupling between the cavity modes and the test mass mechanical mode. In this thesis, the cavity optical properties and the test mass mechanical properties are characterized, before presenting observation of parametric instability. A dynamical scheme to relieve the parametric instability problem in aLIGO is also demonstrated. In addition, an auto-alignment system to control the test masses is investigated.

    AB - Parametric instability at high amplitude is a critical issue in gravitational wave detection. This thesis investigates three-mode optomechanical interactions at high optical power in 80 m Fabry-Perot cavities. As a result, a high-sensitivity transducer is realized by strong coupling between the cavity modes and the test mass mechanical mode. In this thesis, the cavity optical properties and the test mass mechanical properties are characterized, before presenting observation of parametric instability. A dynamical scheme to relieve the parametric instability problem in aLIGO is also demonstrated. In addition, an auto-alignment system to control the test masses is investigated.

    KW - Gravitational wave

    KW - Optical cavity

    KW - Laser

    KW - Parametric instability

    KW - Suspension system

    KW - Auto-alignment system

    M3 - Doctoral Thesis

    ER -