Cheiney P, Carraz O, Bartoszek-Bober D, Faure S, Vermersch F, Fabre C M, Gattobigio G L, Lahaye T, Guéry-Odelin D, Mathevet R
Université de Toulouse, UPS - 118 route de Narbonne, F-31062 Toulouse, France.
Rev Sci Instrum. 2011 Jun;82(6):063115. doi: 10.1063/1.3600897.
We describe a simple Zeeman slower design using permanent magnets. Contrary to common wire-wound setups, no electric power and water cooling are required. In addition, the whole system can be assembled and disassembled at will. The magnetic field is however transverse to the atomic motion and an extra repumper laser is necessary. A Halbach configuration of the magnets produces a high quality magnetic field and no further adjustment is needed. After optimization of the laser parameters, the apparatus produces an intense beam of slow and cold (87)Rb atoms. With typical fluxes of (1-5) × 10(10) atoms/s at 30 m s(-1), our apparatus efficiently loads a large magneto-optical trap with more than 10(10) atoms in 1 s, which is an ideal starting point for degenerate quantum gas experiments.
我们描述了一种使用永久磁铁的简单塞曼减速器设计。与常见的绕线装置不同，该设计无需电力和水冷。此外，整个系统可随意组装和拆卸。然而，磁场与原子运动方向垂直，因此需要额外的再泵浦激光。磁铁的哈尔巴赫配置产生高质量的磁场，无需进一步调整。优化激光参数后，该装置可产生一束高强度的慢速和冷态（87）Rb原子束。在30 m s⁻¹ 的典型通量为（1 - 5）× 10¹⁰ 个原子/秒的情况下，我们的装置能在1秒内有效地将超过10¹⁰ 个原子加载到一个大型磁光阱中，这是简并量子气体实验的理想起点。
