Creating and probing of a perfect vortex in situ with an optically trapped particle

Mingzhou Chen*, Michael Mazilu, Yoshihiko Arita, Ewan M. Wright, Kishan Dholakia

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

24 Citations (Scopus)

Abstract

We experimentally create a 'perfect' vortex beam, which has a uniform ring profile and fixed radius. In contrast with other vortex fields, the intensity profile is independent of its topological charge. We then correct this field in situ using a single trapped particle as a probe. This results in a constant angular velocity for the particle regardless of its position on the beam circumference.

Original languageEnglish
Pages (from-to)162-165
Number of pages4
JournalOptical Review
Volume22
Issue number1
DOIs
Publication statusPublished - Feb 2015

Keywords

  • Optical vortices
  • Optical manipulation
  • Optical tweezers
  • Modes
  • Light
  • Beam

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