Extraction of energy from gravitational waves by laser interferometer detectors

Y. Ma, David Blair, Chunnong Zhao, W. Kells

    Research output: Contribution to journalArticlepeer-review

    3 Citations (Scopus)


    In this paper, we discuss the energy interaction between gravitational waves and laser interferometer gravitational wave detectors. We show that the widely held view that the laser interferometer gravitational wave detector absorbs no energy from gravitational waves is only valid under the approximation of a frequency-independent optomechanical coupling strength and a pump laser without detuning with respect to the resonance of the interferometer. For a strongly detuned interferometer, the optical-damping dynamics dissipates gravitational wave energy through the interaction between the test masses and the optical field. For a non-detuned interferometer, the frequency-dependence of the optomechanical coupling strength causes a tiny energy dissipation, which is proved to be equivalent to the Doppler friction raised by Braginsky et al.
    Original languageEnglish
    Article number015003
    Pages (from-to)1-16
    Number of pages16
    JournalClassical and Quantum Gravity
    Issue number1
    Publication statusPublished - 3 Dec 2014


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