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Q: Fachverband Quantenoptik und Photonik

Q 16: Poster: Quantum information, micromechanical oscillators, matter wave optics, precision measurements and metrology

Q 16.68: Poster

Montag, 17. März 2014, 16:30–18:30, Spree-Palais

Satellite-borne laser system for ^87/85Rb dual-species interferometry — •Markus Krutzik¹, Achim Peters^1,2, and the STE-QUEST team³ — ¹Institut für Physik, HU Berlin — ²Ferdinand-Braun-Institut, Leibniz-Institut für Höchstfrequenztechnik, Berlin — ³European Consortium

The search for unification of general relativity (GR) with quantum mechanics is an enormously active research field and several attempts or extended theories addressing this problem predict violations of the basic principles of GR. ESA’s STE-QUEST is a M3 satellite mission candidate dedicated to conceive different aspects of Einstein’s equivalence principle (EEP), such as testing the universality of the free propagation of matter waves with a dual-species atom interferometer.
In this poster, we present the overall architecture and technological details of a laser system for two-species BEC operation including simultaneous Raman double-diffraction interferometry with ⁸⁷Rb and ⁸⁵Rb. It combines an all-fibered telecom technology based reference and optical dipole trap laser with ultra-compact, micro-integrated ECDL-based MOPA systems for laser cooling and coherent manipulation. Precise switching of all laser beams, frequency shifts, monitoring and laser pulse generation are realized in advanced zerodur optical bench technology featuring free-space optics and active components.

This work is supported by the German Space Agency DLR with funds provided by the Federal Ministry of Economics and Technology (BMWi) under grant numbers DLR 50OY 1304 and 50WM 1141.