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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 21 — Oct. 21, 2013
  • pp: 24837–24846

Precise shaping of laser light by an acousto-optic deflector

Dimitris Trypogeorgos, Tiffany Harte, Alexis Bonnin, and Christopher Foot  »View Author Affiliations


Optics Express, Vol. 21, Issue 21, pp. 24837-24846 (2013)
http://dx.doi.org/10.1364/OE.21.024837


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Abstract

We present a laser beam shaping method using acousto-optic deflection of light and discuss its application to dipole trapping of ultracold atoms. By driving the acousto-optic deflector with multiple frequencies, we generate an array of overlapping diffraction-limited beams that combine to form an arbitrary-shaped smooth and continuous trapping potential. Confinement of atoms in a flat-bottomed potential formed by a laser beam with uniform intensity over its central region confers numerous advantages over the harmonic confinement intrinsic to Gaussian beam dipole traps and many other trapping schemes. We demonstrate the versatility of this beam shaping method by generating potentials with large flat-topped regions as well as intensity patterns that compensate for residual external potentials to create a uniform background to which the trapping potential of experimental interest can be added.

© 2013 OSA

OCIS Codes
(020.0020) Atomic and molecular physics : Atomic and molecular physics
(020.7010) Atomic and molecular physics : Laser trapping
(230.1040) Optical devices : Acousto-optical devices
(020.1475) Atomic and molecular physics : Bose-Einstein condensates

ToC Category:
Atomic and Molecular Physics

History
Original Manuscript: July 24, 2013
Revised Manuscript: September 13, 2013
Manuscript Accepted: September 17, 2013
Published: October 10, 2013

Citation
Dimitris Trypogeorgos, Tiffany Harte, Alexis Bonnin, and Christopher Foot, "Precise shaping of laser light by an acousto-optic deflector," Opt. Express 21, 24837-24846 (2013)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-21-21-24837


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