We report the successful demonstration and characterisation of a Zeeman slower based on an array of permanent magnets, implemented for atomic Sr on the 1S0 → 1P1 transition at 461 nm. Measurements of longitudinal velocity distributions and MOT loading characteristics are presented. In particular, we highlight a simple transverse-field slower, which is both compact and highly tunable, light weight (≤ 2 kg), and with no power load, as a favourable option for space-borne operation. For optimum parameters of this slower we achieve a slow flux of ~ 3.5 × 109 atom/s at ~ 30 m/s for 88Sr and load ~ 2.5 × 107 atoms into a magneto-optical-trap (MOT) operating on the same 1S0 → 1P1 transition, which scales approximately with the relative isotopic natural abundances of Sr. With the addition of repumpers at 707 nm and 679 nm, we achieve a factor of ~ 17 enhancement to MOT number with loading time ~ 0.5 s.
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机译：我们报告了基于永磁体阵列的塞曼减慢器的成功演示和表征，该阵列针对 1 S 0 → 1 P 1 在461 nm处跃迁。给出了纵向速度分布和MOT载荷特性的测量结果。特别是，我们着重介绍了一种简单的横向磁场减速器，它既紧凑又高度可调，重量轻（≤2 kg），并且没有动力负载，是星载作战的理想选择。对于此慢速器的最佳参数，对于 88 Sr和负载〜2.5×10 <将sup> 7 原子放入一个在同一 1 S 0 → 1 P < sub> 1 跃迁，大约与Sr的相对同位素自然丰度成比例。通过在707 nm和679 nm处添加repumpers，我们在加载时间〜0.5 s的情况下将MOT数提高了〜17倍。
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