Three-dimensional optical forces and transfer of orbital angular momentum from multiringed light beams to spherical microparticles

Karen Volke-Sepúlveda, Sabino Chávez-Cerda, Veneranda Garcés-Chávez, Kishan Dholakia

Research output: Contribution to journalArticle

50 Citations (Scopus)

Abstract

Experimental evidence of transfer of orbital angular momentum of multiringed beams to dielectric particles has been reported recently [e.g., J. Opt. B 4, S82 (2002); Phys. Rev. Lett. 91, 093602 (2003)]. Here we present a detailed theoretical examination of the forces involved in trapping and transferring orbital angular momentum to microparticles due to a multiringed light beam, particularly a Bessel beam. Our investigation gathers, in a more general way, the trapping forces for high-index and low-index dielectric transparent particles, as well as for reflective metallic particles, as a function of particle size and position relative to the dimensions of the rings of the beam. We find that particles can be trapped in different regions of the beam intensity profile according to their size and that an azimuthal force component opposite to the beam helicity may appear under certain circumstances, depending on the relative size and radial equilibrium position with respect to the beam for high-index spheres.

Original languageEnglish
Pages (from-to)1749-1757
Number of pages9
JournalJournal of the Optical Society of America B: Optical Physics
Volume21
Issue number10
DOIs
Publication statusPublished - 2004 Oct

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microparticles
light beams
angular momentum
orbitals
trapping
examination
rings
profiles

All Science Journal Classification (ASJC) codes

  • Statistical and Nonlinear Physics
  • Atomic and Molecular Physics, and Optics

Cite this

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title = "Three-dimensional optical forces and transfer of orbital angular momentum from multiringed light beams to spherical microparticles",
abstract = "Experimental evidence of transfer of orbital angular momentum of multiringed beams to dielectric particles has been reported recently [e.g., J. Opt. B 4, S82 (2002); Phys. Rev. Lett. 91, 093602 (2003)]. Here we present a detailed theoretical examination of the forces involved in trapping and transferring orbital angular momentum to microparticles due to a multiringed light beam, particularly a Bessel beam. Our investigation gathers, in a more general way, the trapping forces for high-index and low-index dielectric transparent particles, as well as for reflective metallic particles, as a function of particle size and position relative to the dimensions of the rings of the beam. We find that particles can be trapped in different regions of the beam intensity profile according to their size and that an azimuthal force component opposite to the beam helicity may appear under certain circumstances, depending on the relative size and radial equilibrium position with respect to the beam for high-index spheres.",
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Three-dimensional optical forces and transfer of orbital angular momentum from multiringed light beams to spherical microparticles. / Volke-Sepúlveda, Karen; Chávez-Cerda, Sabino; Garcés-Chávez, Veneranda; Dholakia, Kishan.

In: Journal of the Optical Society of America B: Optical Physics, Vol. 21, No. 10, 10.2004, p. 1749-1757.

Research output: Contribution to journalArticle

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AU - Volke-Sepúlveda, Karen

AU - Chávez-Cerda, Sabino

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AU - Dholakia, Kishan

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AB - Experimental evidence of transfer of orbital angular momentum of multiringed beams to dielectric particles has been reported recently [e.g., J. Opt. B 4, S82 (2002); Phys. Rev. Lett. 91, 093602 (2003)]. Here we present a detailed theoretical examination of the forces involved in trapping and transferring orbital angular momentum to microparticles due to a multiringed light beam, particularly a Bessel beam. Our investigation gathers, in a more general way, the trapping forces for high-index and low-index dielectric transparent particles, as well as for reflective metallic particles, as a function of particle size and position relative to the dimensions of the rings of the beam. We find that particles can be trapped in different regions of the beam intensity profile according to their size and that an azimuthal force component opposite to the beam helicity may appear under certain circumstances, depending on the relative size and radial equilibrium position with respect to the beam for high-index spheres.

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