Heidelberg 2015 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 15: Poster: Quantum Optics and Photonics I

Q 15.67: Poster

Montag, 23. März 2015, 17:00–19:00, C/Foyer

A closed-cycle cryostat setup for next-generation optical resonators with ultra-high frequency stability — •Christian Marciniak, Moritz Nagel, Klaus Döringshoff, Sylvia Schikora, Evgeny V. Kovalchuk, and Achim Peters — Humboldt-Universität zu Berlin, Institut für Physik, AG Optische Metrologie, Newtonstraße 15, 12489 Berlin

We present the current state of our work on design and setup of a novel closed-cycled cryostat system for sapphire optical resonators. The system will operate at liquid helium temperatures and will provide an ultra-low vibration environment for the cavities. The presentation will include details of mechanical design, supporting room-temperature optics as well as considerations into cryogenic optical design such as stray interference minimization and ghosting.

The expected performance of the sapphire resonators is thermal noise limited in frequency stability at 10−17 which will be used for the next generation of Michelson-Morley experiments to test Lorentz invariance at the 10−20 regime.

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DPG-Physik > DPG-Verhandlungen > 2015 > Heidelberg