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Optics Express

Optics Express

  • Editor: Martijn de Sterke
  • Vol. 16, Iss. 20 — Sep. 29, 2008
  • pp: 15897–15902

Independent polarisation control of multiple optical traps

Daryl Preece, Stephen Keen, Elliot Botvinick, Richard Bowman, Miles Padgett, and Jonathan Leach  »View Author Affiliations

Optics Express, Vol. 16, Issue 20, pp. 15897-15902 (2008)

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We present a system which uses a single spatial light modulator to control the spin angular momentum of multiple optical traps. These traps may be independently controlled both in terms of spatial location and in terms of their spin angular momentum content. The system relies on a spatial light modulator used in a “split-screen” configuration to generate beams of orthogonal polarisation states which are subsequently combined at a polarising beam splitter. Defining the phase difference between the beams with the spatial light modulator enables control of the polarisation state of the light. We demonstrate the functionality of the system by controlling the rotation and orientation of birefringent vaterite crystals within holographic optical tweezers.

© 2008 Optical Society of America

OCIS Codes
(140.7010) Lasers and laser optics : Laser trapping
(230.6120) Optical devices : Spatial light modulators

ToC Category:
Optical Trapping and Manipulation

Original Manuscript: July 25, 2008
Revised Manuscript: September 10, 2008
Manuscript Accepted: September 16, 2008
Published: September 22, 2008

Virtual Issues
Vol. 3, Iss. 11 Virtual Journal for Biomedical Optics

Daryl Preece, Stephen Keen, Elliot Botvinick, Richard Bowman, Miles Padgett, and Jonathan Leach, "Independent polarisation control of multiple optical traps," Opt. Express 16, 15897-15902 (2008)

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