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Q: Fachverband Quantenoptik und Photonik

Q 16: Poster: Quantum information, micromechanical oscillators, matter wave optics, precision measurements and metrology

Q 16.83: Poster

Montag, 17. März 2014, 16:30–18:30, Spree-Palais

The Suspension Platform Interferometer for the AEI 10 m Prototype — •Sina Köhlenbeck for the AEI 10m Prototype Team — Albert-Einstein-Institut Hannover, Max-Planck-Institut für Gravitationspyhsik und Institut für Gravitationsphysik der Universität Hannover

The AEI 10m-Prototype facility is an environment for interferometry at the Standard Quantum Limit and a place to test new techniques for the next generation of gravitational wave detectors. Such experiments require extreme isolation from external vibrations. To this end, a variety of subsystems have been developed. Three in-vacuum optical tables are each supported by a seismic attenuation system (SAS), which provides passive isolation down to 100-400 mHz and additional isolation via active feedback control. To operate the three optical tables as one stable ‘virtual platform’ and to provide stabilization at very low frequencies (10 to 100 mHz), a Suspension Platform Interferometer (SPI) is implemented. Using heterodyne Mach-Zehnder interferometry, the SPI measures the relative displacement of the optical tables with a precision as good as 100 pm/√Hz at 10 mHz. A feedback control system then stabilizes the distance between the tables. We report initial results from the control of two tables.