Optical micromanipulation using a Bessel light beam

J Arlt, V Garces-Chavez, Wilson Sibbett, Kishan Dholakia

Research output: Contribution to journalArticlepeer-review

489 Citations (Scopus)

Abstract

We demonstrate a technique for optical manipulation of micron-sized particles, including biological samples, using a zeroth-order Bessel light beam. The central maximum of such a beam offers a "non-diffracting" focal line of light. This line focus is well suited to rotationally align rod-like particles along the beam direction and to build stacks of particles. We have stacked up to nine 5 mum spheres above one another and manipulated this particle chain as a whole, Furthermore, we have observed laser guiding (transport) of 1 mum particles along the Bessel beam axis over 1 mm, which is over 10 times the Rayleigh range for a comparable Gaussian beam. (C) 2001 Elsevier Science B.V. All rights reserved.

Original languageEnglish
Pages (from-to)239-245
Number of pages7
JournalOptics Communications
Volume197
Issue number4-6
DOIs
Publication statusPublished - 1 Oct 2001

Keywords

  • optical tweezers
  • particles
  • guiding
  • alignment
  • manipulation
  • Bessel beam
  • PARTICLES
  • SINGLE
  • REGION
  • TRAP

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