Kavli Affiliate: Johannes Lehmann | Summary:Homodyne Quadrature interferometers (HoQI) are an interferometric displacement sensing scheme proven to have excellent noise performance, making them a strong candidate for sensing and control schemes in gravitational wave detector seismic isolation. Like many interferometric schemes, HoQIs are prone to nonlinear effects when measuring displacements. These nonlinearities, if left unsuppressed, […]
Continue.. Mitigating effects of nonlinearities in homodyne quadrature interferometers