2006/08/01 by V. B. Braginsky, A. G. Gurkovsky, A. Gurkovsky +2 · 4 citations
Engineering · Physics and Astronomy · #Geophysics and Sensor Technology #Mechanical and Optical Resonators #Pulsars and Gravitational Waves Research #gr-qc
paper · pdf · doi:10.1016/j.physleta.2006.09.096
published as Phys.Lett.A362:91-99,2007 · 10 pages, 4 figures
arxiv created 2006/08/01 · openalex publication_date 2006/10/11 · arxiv updated 2009/12/01 · openalex created_date 2022/05/11 · openalex updated_date 2026/07/28
We present the analysis of undesirable effect of parametric oscillatory instability in signal recycled LIGO interferometer. The basis for this effect is the excitation of the additional (Stokes) optical mode, with frequency ω1, and the mirror elastic mode, with frequency ωm, when optical energy stored in the main FP cavity mode, with frequency ω0, exceeds the certain threshold and the frequencies are related as ω0≃ ω1+ωm. We show that possibility of parametric instability in this interferometer is relatively small due to stronger sensitivity to detuning. We propose to ``scan'' the frequency range where parametric instability may take place varying the position of signal recycling mirror.