Freiburg 2019 – wissenschaftliches Programm
FM 41.12: Poster
Dienstag, 24. September 2019, 16:30–18:30, Tents
Optical dipole trapping in a drop tower experiment — •Marian Woltmann1, Christian Vogt1, Sven Herrmann1, Claus Lämmerzahl1, and the PRIMUS Team1,2 — 1University of Bremen, Center of Applied Space Technology and Microgravity (ZARM) — 2LU Hannover, Institute of Quantum Optics
The application of an atom interferometer in weightlessness offers the potential of largely increased interrogation times. As the interferometers sensitivity scales with the square of the free evolution time, the sensitivity is significantly increased. While most such microgravity based experiments use magnetics traps formed by an atom chip, we develop an optical dipole trap for use in weightlessness as an alternative source of cold atom ensembles. Optical dipole traps offer unique advantages like an improved symmetry of the trapping potential and the accessibility of Feshbach resonances. Using a 10W trapping laser at a wavelength of 1949nm, we implement a dual species (Rb and K) cold atom experiment for use in the drop tower in Bremen. With our poster, we will give an overview of the experiment and report on the latest results for the evaporation from an optical dipole trap in microgravity. The PRIMUS-project is supported by the German Space Agency DLR with funds provided by the Federal Ministry for Economic Affairs and Energy (BMWi) under grant number DLR 50 WM 1642.