New counterpropagating geometries are presented for localizing ultracold atoms in the dark regions created by the interference of Laguerre–Gaussian laser beams. In particular dark helices, an “optical revolver,” axial lattices of rings, and axial lattices of ring lattices of rings are considered and a realistic scheme for achieving phase stability is explored. The dark nature of these traps will enable their use as versatile tools for low-decoherence atom interferometry with zero differential light shifts.
© 2012 Optical Society of America
Atomic and Molecular Physics
Original Manuscript: March 14, 2012
Manuscript Accepted: April 21, 2012
Published: June 20, 2012
Vol. 7, Iss. 9 Virtual Journal for Biomedical Optics
Aidan S. Arnold, "Extending dark optical trapping geometries," Opt. Lett. 37, 2505-2507 (2012)