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Q: Fachverband Quantenoptik und Photonik

Q 57: Poster 3: Quantengase, Ultrakalte Atome, Ultrakalte Moleküle, Materiewellen Optik, Präzisionsmessungen, Metrologie

Q 57.100: Poster

Donnerstag, 17. März 2011, 16:30–19:30, P1

Stable fibre injectors for ground-based interferometers performing in the picometer stability level — •Lina-Ellen Wittrock, Johanna Bogenstahl, Gerhard Heinzel, and Karsten Danzmann — Max-Planck Institute for Gravitational Physics (Albert-Einstein Institute) Hannover and QUEST, Leibniz University Hannover, Germany

Laser Interferometer often require fiber injectors because the laser is not located directly on the optical bench. Conventional injectors are extremely sensitive in terms of mechanical and thermal stress, which causes problems for interferometric measurements at the picometer stability level. Therefore, their application is not suitable for laser interferometers like the planned space missions LISA (Laser Interferometer Space Antenna) and LISA Pathfinder (LPF). Customized ultra-stable injectors were already developed for implementation on the optical bench of LPF Technology Package at the Institute for Gravitational Research, University of Glasgow.

It has been shown that this improvement of the fiber injectors is not only required for space-bourne but also for ground-based interferometers performing at the picometer stability level. This will be essential for pre-experiments for LISA. The design, construction and implementation of customized ultra-stable fiber injectors for our ground-based experiments will be presented.