Düsseldorf 2007 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 13: Präzisionsmessungen I
Q 13.3: Vortrag
Montag, 19. März 2007, 17:15–17:30, 5L
A new Apparatus for a Precision Test of the Isotropy of the Speed of Light using ULE Optical Resonators — •Ch. Eisele1, A. Yu. Nevsky1, M. Okhapkin1,2, and S. Schiller1 — 1Institut für Experimentalphysik, Heinrich-Heine-Universität Düsseldorf, 40225 Düsseldorf — 2Institute for Laser Physics, Novosibirsk, Russia
Over the past years several Michelson-Morley-type experiments have been performed [1-4], utilising either optical or microwave resonators, which lead to strong constraints on possible violations of Local Lorentz Invariance (LLI) for electromagnetic waves.
We will report on the development of a new apparatus for an improved test of LLI. Our experimental approach is based on orthogonal high-finesse optical resonators, embedded in a rectangular ULE (ultra-low expansion glass) block. The use of the monolithic construction, which possesses a certain value of common-mode rejection, reduces the sensitivity of the setup to external perturbations (temperature instability, mechanical vibrations, etc.). A monolithic Nd:YAG-laser is frequency stabilized to the cavities. The complete setup can be continuously rotated. The frequency of the beat signal between the two cavities is analysed as a function of orientation in space. A detailed characterisation of the systematic effects of the setup (tilt,laser power, etc.) and first experimental results will be presented.
[1]P.Antonini et al., Phys.Rev.A 71, 050202 (2005); S.Schiller et al., arXiv:physics/0510169 [2]P.L.Stanwix et al., Phys.Rev.Lett. 95, 040404 (2005) [3]S.Herrmann et al., Phys.Rev.Lett. 95, 150401 (2005) [4]P.L.Stanwix et al., Phys.Rev.D 74 (2006), 081101 (R)