Stuttgart 2012 – wissenschaftliches Programm
Q 34.63: Poster
Dienstag, 13. März 2012, 16:30–19:00, Poster.I+II
An optical dipole trap as a source for atom interferometry — •Dennis Schlippert, Jonas Hartwig, Ulrich Velte, Daniel Tiarks, Sven Ganske, Olga Lysov, Wolfgang Ertmer, and Ernst Rasel — Institut für Quantenoptik, Leibniz Universität Hannover, Welfengarten 1, 30167 Hannover
We report on our work directed towards using an optical dipole trap (ODT) at a wavelength of 2 µm as a source for atom interferometry. Applications for single-species (87Rb) and dual-species (87Rb + 39K) gravimetry are discussed. Loading the ODT from a single (dual) species 2D/3D-magneto-optical trap enables accurate initial position control and allows to precisely colocate two ensembles, when operated in dual-species mode. Additionally, use of evaporative and/or sympathetic cooling techniques is possible.
We present an analysis of an ODT source and show the benefits over state-of-the-art optical molasses sources when dealing with systematic effects, e.g. non-negligible transversal atomic spread, the Coriolis phase and gravity gradient errors.