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Q: Fachverband Quantenoptik und Photonik
Q 20: Präzisionsmessungen I
Q 20.8: Talk
Tuesday, March 3, 2009, 15:45–16:00, Audi-A
Laser frequency stabilization for the AEI 10 m prototype interferometer — •Fumiko Kawazoe1, Alessandro Bertolini1, Michael Born1, Jens Breyer1, Yanbei Chen1, Stefan Gossler1, Katrin Dahl1, Oliver Kranz1, Gerrit Kuehn1, Harald Lueck1, Kasem Mossavi1, Henning Ryll1, Kentaro Somiya2, Ken Strain1, Bob Taylor1, Benno Willke1, Alexander Wanner1, Tobias Westphal1, and Karsten Danzmann1 — 1Max-Planck-Institut fr Gravitationsphysik (Albert-Einstein-Institut), Institut fr Gravitationsphysik, Leibniz Universitt Hannover, Callinstr. 38, 30167 Hannover — 2California Institute of Technology, LIGO Project-MS 18-34, Pasadena, CA 91125
The AEI 10m prototype interferometer will provide a test bed for various experiments techniques needed for the third generation of gravitational-wave detectors. One such experiment will test the techniques required to improve the sensitivity once it is limited by the Standard Quantum Limit (SQL). In order to achieve sub-SQL sensitivity, it is essential to suppress the sum of all classical noise sourses well below the SQL. To meet this requirement, e.g. the relative laser frequency variations have to be smaller than 5·10−19/√Hz at Fourier frequencies around 100Hz. This will be achieved by preparing a suspended triangular cavity serving as a length reference to stabilise the laser frequency to. The optical design as well as the suspension design will be presented.