论文标题
双色原子梁较慢和超速气体的磁场补偿
Bi-color atomic beam slower and magnetic field compensation for ultracold gases
论文作者
论文摘要
最近已经开发了横向载荷的二维 - 磁磁陷阱（2D-MOT），作为冷跨原子的高通量来源，以实现新一代紧凑的实验设置。在这里，我们讨论了实施交叉偏振的双色较慢，以改善2D-MOT载荷，并在最终MOT中增加原子数量，将其增加11次。我们的减速方案同时解决了在461 nm处的88SR 1S0-> 1p1跃迁的两个激发Zeeman取代。我们还意识到了对微莫加斯制度的磁场的3轴主动反馈控制。由于在原子冷样品周围以二线构型排列的八个磁场探针的网络以及一对沿着三个笛卡尔方向的helmholtz配置中的一对线圈进行，因此进行了这种补偿。我们的主动反馈能够有效抑制689〜nm隔离线MOT的大多数磁诱导的位置波动。
Transversely loaded bidimensional-magneto-optical-traps (2D-MOT) have been recently developed as high flux sources for cold strontium atoms to realize a new generation of compact experimental setups. Here, we discuss on the implementation of a cross-polarized bi-color slower for a strontium atomic beam improving the 2D-MOT loading, and increasing the number of atoms in a final MOT by eleven times. Our slowing scheme addresses simultaneously two excited Zeeman substates of the 88Sr 1S0->1P1 transition at 461 nm. We also realized a 3-axis active feedback control of the magnetic field down to the microgauss regime. Such a compensation is performed thanks to a network of eight magnetic field probes arranged in a cuboid configuration around the atomic cold sample, and a pair of coils in Helmholtz configuration along each of three Cartesian directions. Our active feedback is capable of efficiently suppressing most of the magnetically-induced position fluctuations of the 689~nm intercombination-line MOT.
