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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 13, Iss. 10 — May. 16, 2005
  • pp: 3862–3867

Deterministic approach to the generation of modified helical beams for optical manipulation

J. Lin, X.-C. Yuan, S. H. Tao, X. Peng, and H. B. Niu  »View Author Affiliations

Optics Express, Vol. 13, Issue 10, pp. 3862-3867 (2005)

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We present a deterministic method to generate modified helical beams which create optical vortices with desired dark core intensity patterns in the far-field. The experiments are implemented and verified by a spatial light modulator (SLM), which imprints a phase function onto the incident wavefront of a TEM00 laser mode to transform the incident beam into a modified helical beam. The phase function can be calculated once a specific dark core shape of an optical vortex is required. The modified helical beam is exploited in optical manipulation with verification of its orbital angular momentum experimentally.

© 2005 Optical Society of America

OCIS Codes
(050.1970) Diffraction and gratings : Diffractive optics
(140.3300) Lasers and laser optics : Laser beam shaping
(140.7010) Lasers and laser optics : Laser trapping
(350.5030) Other areas of optics : Phase

ToC Category:
Research Papers

Original Manuscript: February 24, 2005
Revised Manuscript: May 10, 2005
Published: May 16, 2005

J. Lin, X.-C. Yuan, S. H. Tao, X. Peng, and H. B. Niu, "Deterministic approach to the generation of modified helical beams for optical manipulation," Opt. Express 13, 3862-3867 (2005)

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