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Optics Letters


  • Editor: Xi-Cheng Zhang
  • Vol. 39, Iss. 7 — Apr. 1, 2014
  • pp: 2012–2015

Steerable optical tweezers for ultracold atom studies

K. O. Roberts, T. McKellar, J. Fekete, A. Rakonjac, A. B. Deb, and N. Kjærgaard  »View Author Affiliations

Optics Letters, Vol. 39, Issue 7, pp. 2012-2015 (2014)

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We report on the implementation of an optical tweezer system for controlled transport of ultracold atoms along a narrow, static confinement channel. The tweezer system is based on high-efficiency acousto-optic deflectors and offers two-dimensional control over beam position. This opens up the possibility for tracking the transport channel when shuttling atomic clouds along it, forestalling atom spilling. Multiple clouds can be tracked independently by time-shared tweezer beams addressing individual sites in the channel. The deflectors are controlled using a multichannel direct digital synthesizer, which receives instructions on a submicrosecond time scale from a field-programmable gate array. Using the tweezer system, we demonstrate sequential binary splitting of an ultracold Rb87 cloud into 25 clouds.

© 2014 Optical Society of America

OCIS Codes
(020.7010) Atomic and molecular physics : Laser trapping
(350.4855) Other areas of optics : Optical tweezers or optical manipulation

ToC Category:
Atomic and Molecular Physics

Original Manuscript: December 19, 2013
Manuscript Accepted: February 21, 2014
Published: March 26, 2014

Virtual Issues
Vol. 9, Iss. 6 Virtual Journal for Biomedical Optics

K. O. Roberts, T. McKellar, J. Fekete, A. Rakonjac, A. B. Deb, and N. Kjærgaard, "Steerable optical tweezers for ultracold atom studies," Opt. Lett. 39, 2012-2015 (2014)

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