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Q: Fachverband Quantenoptik und Photonik

Q 49: Laseranwendungen: Laserspektroskopie

Q 49.8: Talk

Thursday, March 17, 2011, 12:15–12:30, SCH A215

LISA Pathfinder Optical Metrology System Modelling — •Natalia Korsakova, Martin Hewitson, Gerhard Heinzel, and Karsten Danzmann — Max-Planck Institut for Gravitational Physics (Albert-Einstein Insitut) Hannover and QUEST, Leibniz University Hannover, Callinstraße 36, 30167 Hannover

LISA Pathfinder is the technology demonstration space mission for LISA (Laser Interferometer Space Antenna). One of the main objectives of LISA Pathfinder is to demonstrate drag-free control of the space craft. LTPDA (LISA Technology Package Data Analysis) models the system and the control using state-space modelling. In this talk I will discuss the open-loop model for the optical metrology system and compare simulations to data from the real system. This model considers separately the optical part of the interferometer, the phasemeter and the following data processing of the measurements, which allows us to account for the different noise sources which arise in each of the subsystems of the optical metrology system.