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Erlangen 2018 – scientific programme

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A: Fachverband Atomphysik

A 42: Poster Session IIIb

A 42.23: Poster

Thursday, March 8, 2018, 16:15–18:15, Zelt Ost

Optical Trap for an Ultracold 2D Fermi Gas — •Andreas Kell, Martin Link, Kuiyi Gao, and Michael Köhl — Physikalisches Institut, University of Bonn, Wegelerstraße 8, 53115 Bonn, Germany

Interacting atomic Fermi gases in two dimensions feature various interesting phenomena and have been the target of many experimental studies in this decade. Our experimental setup produces a large degenerate gas of fermionic lithium in the BEC-BCS crossover. It is upgraded with a new trap geometry, which strongly confines the atoms only along one direction. This leads to a very large aspect ratio required to enter the 2D regime with high atom number. For this purpose a highly elliptical focused blue-detuned beam with a TEM01-like mode profile is employed. The mode profile is generated by phase-shifting one half of the originally Gaussian beam with a phase plate.

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