Mainz 2017 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
Q: Fachverband Quantenoptik und Photonik
Q 5: Precision Measurements and Metrology: Gravity
Q 5.5: Vortrag
Montag, 6. März 2017, 15:45–16:00, P 104
A backlink for LISA: Pre-experiment and optical design — •Lea Bischof1, Katharina-Sophie Isleif1, Oliver Gerberding2, Daniel Penkert2, Stefan Ast2, Gerhard Heinzel2, Michael Winter1, Jens Reiche2, and Karsten Danzmann1,2 — 1Institut für Gravitationsphysik, Leibniz Universität Hannover — 2Max-Planck-Institut für Gravitationsphysik (Albert-Einstein-Institut)
The Laser Interferometer Space Antenna (LISA) is a planned space-based gravitational wave detector with arm-lengths of several million kilometers. To suppress laser frequency noise in this detector two or more arms have to be compared to synthesize a quasi Michelson interferometer. This is non-trivial due to an orbit induced breathing of the angle between the arms, which requires an adaptable link (so-called backlink) between two optical benches in one satellite. Therefore, a new experiment is currently being set-up at the AEI in Hannover to compare three different methods: a 'fiber backlink', a 'free beam backlink' and a 'frequency separated backlink'. All bonded on two baseplates that are fixed on two rotary stages to simulate a LISA like motion. We will present the current status of this, so called '3Backlink-experiment', the stray light mitigation strategies and the actual implementation of a pre-experiment that will analyze key issues for the free beam backlink. Highlights include first results with a free beam backlink, including angular steering control, and the IfoCAD based design of the highly complex three backlink interferometer.