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

Research output: Contribution to journalArticle

20 Scopus citations


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 (US)
Pages (from-to)162-165
Number of pages4
JournalOptical Review
Issue number1
StatePublished - Feb 1 2015



  • Optical manipulation
  • Optical tweezers
  • Optical vortices

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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