Optical ferris wheel for ultracold atoms
Optical ferris wheel for ultracold atoms
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DOI:
10.1364/oe.15.008619
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发表时间:
2007-07-09
期刊:
影响因子:
3.8
通讯作者:
Arnold, A. S.
中科院分区:
文献类型:
--
作者:
Franke-Arnold, S.;Leach, J.;Arnold, A. S.
We propose a versatile optical ring lattice suitable for trapping cold and quantum degenerate atomic samples. We demonstrate the realisation of intensity patterns from pairs of Laguerre-Gauss (exp(il theta)) modes with different l indices. These patterns can be rotated by introducing a frequency shift between the modes. We can generate bright ring lattices for trapping atoms in red-detuned light, and dark ring lattices suitable for trapping atoms with minimal heating in the optical vortices of blue-detuned light. The lattice sites can be joined to form a uniform ring trap, making it ideal for studying persistent currents and the Mott insulator transition in a ring geometry. (c) 2007 Optical Society of America