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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 10, Iss. 17 — Aug. 26, 2002
  • pp: 871–878

Optical angular momentum transfer to transparent isotropic particles using laser beam carrying zero average angular momentum

Enrico Santamato, Antonio Sasso, Bruno Piccirillo, and Angela Vella  »View Author Affiliations

Optics Express, Vol. 10, Issue 17, pp. 871-878 (2002)

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The torque exerted by an astigmatic optical beam on small transparent isotropic particles was dynamically measured observing the angular motion of the particles under a microscope. The data confirmed that torque was originated by the transfer of orbital angular momentum associated with the spatial changes in the phase of the optical field induced by the moving particle. This mechanism for angular momentum transfer works also with incident light beams with no net angular momentum.

© 2002 Optical Society of America

OCIS Codes
(140.7010) Lasers and laser optics : Laser trapping
(190.0190) Nonlinear optics : Nonlinear optics
(260.0260) Physical optics : Physical optics

ToC Category:
Research Papers

Original Manuscript: August 12, 2002
Revised Manuscript: August 1, 2002
Published: August 26, 2002

Enrico Santamato, Antonio Sasso, Bruno Piccirillo, and Angela Vella, "Optical angular momentum transfer to transparent isotropic particles using laser beam carrying zero average angular momentum," Opt. Express 10, 871-878 (2002)

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