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arXiv 0908.2068physics.atom-ph
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锂和镱原子的同时磁光俘获产生超冷极性分子

Simultaneous magneto-optical trapping of lithium and ytterbium atoms towards production of ultracold polar molecules

M. Okano, H. Hara, M. Muramatsu, K. Doi, S. Uetake, Y. Takasu, Y. Takahashi

摘要:

我们首次成功地实现了锂($^6$ Li)和镱($^{174}$ Yb)原子的同时磁光捕获(MOT),以制备超冷极性分子LiYb。为此,我们研制了一台以两种原子为原子源的双原子炉,并成功地观察到了Li和Yb原子在双原子炉原子束中的光谱。我们为CO $_2$激光器建造了真空室,包括带有锌硒(ZnSe)窗口的玻璃池,这是蒸发和交感冷却的有用的光阱光源。压缩MOT中的典型原子数和温度分别为7个$\times10^3$原子,对于$^6$ Li为640 $μ$ K,对于$^{174}$ Yb为7个$\times10^4$原子和60 $μ$ K。

英文摘要:

We have successfully implemented the first simultaneous magneto-optical trapping (MOT) of lithium ($^6$Li) and ytterbium ($^{174}$Yb) atoms, towards production of ultracold polar molecules of LiYb. For this purpose, we developed the dual atomic oven which contains both atomic species as an atom source and successfully observed the spectra of the Li and Yb atoms in the atomic beams from the dual atomic oven. We constructed the vacuum chamber including the glass cell with the windows made of zinc selenium (ZnSe) for the CO$_2$ lasers, which are the useful light sources of optical trapping for evaporative and sympathetic cooling. Typical atom numbers and temperatures in the compressed MOT are 7$\times10^3$ atoms, 640 $μ$K for $^6$Li, 7$\times10^4$ atoms and 60 $μ$K for $^{174}$Yb, respectively.

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