Stuttgart 2012 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 34: Poster 1

Q 34.2: Poster

Dienstag, 13. März 2012, 16:30–19:00, Poster.I+II

Enlighten the AEI 10m Prototype Interferometer — •Thimotheus Alig for the AEI 10m Prototype Team — Leibniz Universität Hannover und Max-Planck-Institut für Gravitationsphysik (AEI)

An important link to the understanding of the transition between quantum mechanics and the physics of macroscopic objects is the investigation of macroscopic quantum systems. For this reason and for the improvement of gravitational-wave detectors, the AEI 10m Prototype Interferometer is being set up at the Max-Planck-Institute for Gravitational Physics in Hannover. It is a Michelson interferometer extending over three benches inside a vacuum system with an arm length of about 10m. The macroscopic quantum system will be composed of the laser light and 100g heavy mirrors, whose positions are to be measured by the interferometer at the Standard Quantum Limit.

The light for the interferometer is generated by a monolithic non-planar ring oscillator outside the vacuum at a wavelength of 1064nm and is then amplified to a maximum output power of 35W. It is sent through a 5m long photonic crystal fibre into the vacuum system. Due to the fiber length and the high laser power the Brillouin scattering in the fiber is the limiting factor of the optical power for the interferometer.

This talk deals with the provision of the laser light for the interferometer with a focus on the transmission of the light through the fiber.