Dresden 2011 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 57: Poster 3: Quantengase, Ultrakalte Atome, Ultrakalte Moleküle, Materiewellen Optik, Präzisionsmessungen, Metrologie
Q 57.107: Poster
Donnerstag, 17. März 2011, 16:30–19:30, P1
Towards an Ultra-Stable Optical Sapphire Cavity System for Testing Lorentz Invariance — •Moritz Nagel, Katharina Möhle, Klaus Döringshoff, Evgeny V. Kovalchuk, and Achim Peters — Humboldt-Universität zu Berlin, Institut für Physik, AG Optische Metrologie, Newtonstr. 15, 12489 Berlin
We present a design for an ultra-stable cryogenically cooled sapphire optical cavity system, with a fractional frequency stability better than 10−16 at one second integration. This so far unrealized stability in optical resonator systems could be used to enhance a broad range of experimental and technical applications, e.g. high-precision spectroscopy or deep-space communication.
We plan to use the ultra-stable cavities to perform the best laboratory-based test of Lorentz invariance. The cavities will be arranged in a Michelson-Morley configuration and continuously rotated for more than one year using a custom-made high-precision low noise turntable system. The sensitivity of this setup to violations of Lorentz invariance should be in the 10−19 to 10−20 regime, corresponding to more than a 100-fold improvement in the precision of modern Michelson-Morley type experiments. Furthermore, ultra-stable cryogenic microwave whispering gallery resonators will be added to the experiment in collaboration with the University of Western Australia. With this co-rotating microwave and optical resonator setup we will for the first time be able to search for new types of Lorentz violating signals.