Parametric Oscillatory Instability in Fabry-Perot (FP) Interferometer

摘要

We present an approximate analysis of a nonlinear effect of parametricoscillatory instability in FP interferometer. The basis for this effect is theexcitation of the additional (Stokes) optical mode and of the mirror's elasticmode when the optical energy stored in the FP resonator main mode exceeds thecertain threshold. This effect is undesirable in laser gravitational waveantennae because it may create a specific upper limit for the value of energystored in FP resonator. In order to avoid it the detailed analysis of themirror's elastic modes and FP resonator optical modes structure is necessary.