An optical nanotrap array movable over a milimetre range

T. Cizmar, M. Siler, P. Zemanek

Research output: Contribution to journalArticlepeer-review

90 Citations (Scopus)

Abstract

We present the theoretical and experimental study of nondiffracting Bessel beams as a device for optical manipulation and confinement of nanoparticles. We express analytically the optical forces acting on a nanoparticle placed into a single and two counter-propagating non-paraxial nondiffracting beams created behind the axicon. Nanoparticle behavior in these configurations is predicted by computer simulations. Finally we demonstrate experimentally how standing waves created from two independent counter-propagating nondiffraction beams confines polystyrene beads of radii 100 nm, and organizes them into a one-dimensional chain 1 mm long. Phase shift in one beam causes the motion of the whole structure of the standing wave together with any confined objects over its extent.

Original languageEnglish
Pages (from-to)197-203
Number of pages7
JournalApplied Physics B: Lasers and Optics
Volume84
Issue number1-2
DOIs
Publication statusPublished - Jul 2006

Keywords

  • BESSEL BEAMS
  • NONDIFFRACTING BEAMS
  • GAUSSIAN BEAMS
  • LIGHT
  • PROPAGATION
  • AXICON
  • FIELDS
  • MICROMANIPULATION

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