Dark dynamic acousto-optic ring lattices for ultracold atoms

We demonstrate the optical generation of dynamic dark optical ring lattices, which do not require Laguerre-Gauss beams, large optical coherence lengths or interferometric stability. S imple control signals lead to spatial modulation and reproducible rotation, offe ring manifold possibilities for complex dynamic ring lattices. In conjun ction with a magnetic trap, these scanned 2D intensity distributions fr om a single laser beam will enable precision trapping and manipulation of ult racold species using blue-detuned light. The technique is ideal for azimut hal ratchet, Mott insulator and persistent current experiments with quantum degenerate gases. © 2008 Optical Society of America OCIS codes: (020.7010) Trapping; (230.1040) Acousto-optical devices References and links 1. E. A. Hinds and I. G. Hughes, “Magnetic atom optics: mirror s, guides, traps, and chips for atoms,” J. Phys. D32, R119-R146 (1999); C. S. Adams and E. Riis, “Laser cooling an d trapping of neutral atoms,” Prog. 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