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Proceedings Paper

Single-beam, dark toroidal optical traps for cold atoms
Author(s): Fredrik K. Fatemi; Spencer E. Olson; Mark Bashkansky; Zachary Dutton; Matthew Terraciano
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Paper Abstract

We demonstrate the generation of single-beam dark toroidal optical intensity distributions, which are of interest for neutral atom storage and atom interferometry. We demonstrate experimentally and numerically optical potentials that contain a ring-shaped intensity minimum, bounded in all directions by higher intensity. We use a spatial light modulator to alter the phase of an incident laser beam, and analyze the resulting optical propagation characteristics. For small toroidal traps (< 50 &mgr;m diameter), we find an optimal superposition of Laguerre-Gaussian modes that allows the formation of single-beam toroidal traps. We generate larger toroidal bottle traps by focusing hollow beams with toroidal lenses imprinted onto the spatial light modulator.

Paper Details

Date Published: 9 February 2007
PDF: 10 pages
Proc. SPIE 6483, Complex Light and Optical Forces, 648307 (9 February 2007); doi: 10.1117/12.701078
Show Author Affiliations
Fredrik K. Fatemi, Naval Research Lab. (United States)
Spencer E. Olson, Naval Research Lab. (United States)
Mark Bashkansky, Naval Research Lab. (United States)
Zachary Dutton, Naval Research Lab. (United States)
Matthew Terraciano, Naval Research Lab. (United States)

Published in SPIE Proceedings Vol. 6483:
Complex Light and Optical Forces
David L. Andrews; Enrique J. Galvez; Gerard Nienhuis, Editor(s)

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