Backscatter Tolerance of a Travelling-Wave Optical Parametric Oscillator

摘要: Backscattered light in the squeezing propagation path is a source of low frequency noise. In gravitational-wave detector with squeezing, this can potentially be sensitivity-limiting noise (The influence backscattered squeezed-interferometric readout will covered Chap. 10.). A possible back-reflecting OPO cavity itself. As stated 6, travelling-wave design DB-OPO was chosen because its first-order immunity to light. This chapter presents analysis and experiment results that quantifies tolerance Reported as part (Chua et al., Opt Lett 36(23):4608, 2011, [1]), author’s knowledge first such measurement kind. After defining light, theoretical framework for calculating backscatter reflectivity introduced. The experiments performed determine intrinsic isolation report an factor \((41 \pm 2)\) dB. followed by calculation bi-directional scatter distribution function OPO. discussion on determined value concludes Chapter.