This article is cited in 15 papers

Fifth Seminar in memory of D.N. Klyshko

Parametric oscillatory instability in a signal-recycled LIGO interferometer

S. P. Vyatchanin, S. E. Strigin

Lomonosov Moscow State University, Faculty of Physics

Abstract: The undesirable effect of parametric oscillatory instability in a LIGO (Laser Interferometer Gravitational-Wave Observatory) laser gravitational-wave antenna with a signal-recirculation mirror is analysed in detail. The instability is manifested in excitation of the Stokes optical mode and elastic mechanical mode of the mirror. It is shown that, if the eigenfrequencies of Fabry–Perot resonators in the interferometer arms are different, the parametric instability is quite small due to a small passband band width.

PACS: 04.80.Nn, 07.60.Ly

Received: 05.07.2007
Revised: 15.08.2007

 English version: Quantum Electronics, 2007, 37:12, 1097–1101

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