Dörscher Sören, Thobe Alexander, Hundt Bastian, Kochanke André, Le Targat Rodolphe, Windpassinger Patrick, Becker Christoph, Sengstock Klaus
Institut für Laserphysik, Zentrum für Optische Quantentechnologien, Universität Hamburg, Hamburg 22761, Germany.
Rev Sci Instrum. 2013 Apr;84(4):043109. doi: 10.1063/1.4802682.
We report on the first experimental setup based on a 2D-/3D-magneto-optical trap (MOT) scheme to create both Bose-Einstein condensates and degenerate Fermi gases of several ytterbium isotopes. Our setup does not require a Zeeman slower and offers the flexibility to simultaneously produce ultracold samples of other atomic species. Furthermore, the extraordinary optical access favors future experiments in optical lattices. A 2D-MOT on the strong (1)S0 → (1)P1 transition captures ytterbium directly from a dispenser of atoms and loads a 3D-MOT on the narrow (1)S0 → (3)P1 intercombination transition. Subsequently, atoms are transferred to a crossed optical dipole trap and cooled evaporatively to quantum degeneracy.
我们报道了首个基于二维/三维磁光阱（MOT）方案的实验装置，用于制备多种镱同位素的玻色-爱因斯坦凝聚体和简并费米气体。我们的装置不需要塞曼减速器，并且具有同时制备其他原子种类超冷样品的灵活性。此外，其卓越的光学通道有利于未来在光学晶格中的实验。在强的（1）S0 → （1）P1跃迁上的二维磁光阱直接从原子分配器捕获镱原子，并在窄的（1）S0 → （3）P1禁戒跃迁上加载三维磁光阱。随后，原子被转移到交叉光学偶极阱中，并通过蒸发冷却至量子简并态。
