Hannover 2016 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 16: Precision Measurements and Metrology IV (with A)
Q 16.3: Talk
Tuesday, March 1, 2016, 11:30–11:45, a310
Laser Interferometer Space Antenna Optical Bench Test Bed — •Michael Tröbs1, Germán Fernandez Barranco1, Michael Chwalla2, Ewan Fitzsimons2, Oliver Gerberding1, Gerhard Heinzel1, Christian Killow3, Maike Lieser1, Neda Meshksar1, Vitali Müller1, Michael Perreur-Lloyd3, David Robertson3, Sönke Schuster1, Thomas Schwarze1, Henry Ward1, Max Zwetz1, and Karsten Danzmann1 — 1Albert Einstein Institut — 2Airbus Defense and Space — 3University of Glasgow
The Laser Interferometer Space Antenna (LISA) is a future space-based interferometric gravitational-wave detector consisting of three spacecraft in a triangular configuration in Earth-like orbits around the sun. The interferometric measurements of path length changes between satellites will be performed on so-called optical benches in the satellites. Angular misalignments of the interfering beams will couple into the length measurement and represent a significant noise source (tilt-to-length coupling). Imaging systems are foreseen to reduce this tilt-to-length coupling. We report on an optical bench test bed to investigate imaging systems and the test results. The tilt-to-length coupling requirement of 25 um/rad was met with a two-lens imaging system.