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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 13, Iss. 21 — Oct. 17, 2005
  • pp: 8678–8685

High-precision steering of multiple holographic optical traps

Christian H. J. Schmitz, Joachim P. Spatz, and Jennifer E. Curtis  »View Author Affiliations

Optics Express, Vol. 13, Issue 21, pp. 8678-8685 (2005)

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Locating and steering entire ensembles of microscopic objects has become extremely practical with the emergence of holographic optical tweezers. Application of this technology to single molecule experiments requires great accuracy in the spatial positioning of optical traps. This paper calculates the theoretical position resolution of a single holographic beam, predicting that sub-nanometer resolution is easily achieved. Experimental corroboration of the spatial resolution’s inverse dependence on the hologram’s number of pixels and phase levels is presented. To at least a nanometer range position resolution, multiple optical tweezers created by complex superposition holograms also follow the theoretical predictions for a single beam.

© 2005 Optical Society of America

OCIS Codes
(020.7010) Atomic and molecular physics : Laser trapping
(120.5060) Instrumentation, measurement, and metrology : Phase modulation
(170.4520) Medical optics and biotechnology : Optical confinement and manipulation
(230.6120) Optical devices : Spatial light modulators

ToC Category:
Research Papers

Original Manuscript: June 17, 2005
Revised Manuscript: June 17, 2005
Published: October 17, 2005

Christian Schmitz, Joachim Spatz, and Jennifer Curtis, "High-precision steering of multiple holographic optical traps," Opt. Express 13, 8678-8685 (2005)

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