Transfer of orbital angular momentum to an optically trapped low-index particle

Veneranda Garces-Chavez, K Volke-Sepulveda, S Chavez-Cerda, Wilson Sibbett, Kishan Dholakia

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169 Citations (Scopus)

Abstract

We demonstrate the transfer of orbital angular momentum from a light beam to a trapped low-index particle.. The particle is trapped in a dark annular region of a high-order Bessel beam and rotates around the beam axis due to scattering from the helical wave fronts of the light beam. A general theoretical geometrical optics model. is developed that, applied to our specific situation, corroborates tweezing and transfer of orbital angular momentum to the low-index particle. Good quantitative agreement between theory and experiment for particle rotation rates is observed.

Original languageEnglish
Article number063402
Number of pages8
JournalPhysical Review. A, Atomic, molecular, and optical physics
Volume66
Issue number6
DOIs
Publication statusPublished - Dec 2002

Keywords

  • HORIZONTAL LASER-BEAMS
  • DIELECTRIC SPHERE
  • FORCE
  • LIGHT
  • LEVITATION
  • VORTEX
  • MICROPARTICLES
  • SPANNER
  • SPIN

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