Parametric instability at high amplitude is a critical issue in gravitational wave detection. This thesis investigates three-mode optomechanical interactions at high optical power in 80 m Fabry-Perot cavities. As a result, a high-sensitivity transducer is realized by strong coupling between the cavity modes and the test mass mechanical mode. In this thesis, the cavity optical properties and the test mass mechanical properties are characterized, before presenting observation of parametric instability. A dynamical scheme to relieve the parametric instability problem in aLIGO is also demonstrated. In addition, an auto-alignment system to control the test masses is investigated.
|Qualification||Doctor of Philosophy|
|Award date||7 Sep 2016|
|Publication status||Unpublished - 2015|