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(i-ө) modes with different - 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.
|Number of pages||7|
|Publication status||Published - 26 Jun 2007|
- atomic and molecular physics
- laser trapping lasers
- laser optics
- laser cooling
- optical devices
- spatial light modulators
- physical optics
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Data for: "Optical ferris wheel for ultracold atoms"
Franke-Arnold, S. (Contributor), Leach, J. (Contributor), Padgett, M. J. (Contributor), Lembessis, V. E. (Contributor), Ellinas, D. (Contributor), Wright, A. J. (Contributor), Girkin, J. M. (Contributor), Öhberg, P. (Contributor) & Arnold, A. (Contributor), figshare, 16 Dec 2022