We describe the trapping of lithium atoms in an optical dipole trap about 1 mm in size, with a nearly rectangular potential. The trap has the shape of a cylinder with flat bases. The confinement region is bounded by thin walls produced by light with a frequency blue-detuned from an atomic transition (resonance) frequency by 19 GHz. Before trapping, the gas is collected and cooled in a magneto-optical trap whose centre nearly coincides with the centre of the dipole trap. After switching off the magneto-optical trap, we have photographed the atoms remaining in the dipole trap.

中文翻译：

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大型空心光学偶极阱中的锂原子捕获

我们描述了在大约1 mm大小的电偶极阱中捕获锂原子的过程，该势阱具有近乎矩形的电势。疏水阀的形状为带有平底的圆柱体。限制区域被薄壁包围，薄壁由光产生，该光具有从原子跃迁（共振）频率蓝色失谐了19 GHz的频率。在捕集之前，将气体收集在磁光阱中并在其中冷却，其中心几乎与偶极阱的中心重合。关闭磁光阱后，我们拍摄了偶极阱中剩余的原子。