Near-field optical micromanipulation with cavity enhanced evanescent waves

P J Reece, V Garces-Chavez, K Dholakia

Research output: Contribution to journalArticlepeer-review

79 Citations (Scopus)

Abstract

We show that the forces associated with near-field optical micromanipulation can be greatly increased through the use of cavity enhanced evanescent waves. This approach utilizes a resonant dielectric waveguide structure and a prism coupler to produce Fabry-Perot-like cavity modes at a dielectric-fluid interface. Fabricated structures show a ten times enhancement in the optical interaction and optical force for micrometer-sized colloids. In addition, stable accumulation and ordering of large scale arrays of colloids are demonstrated using two counter-propagating cavity enhanced evanescent waves. (c) 2006 American Institute of Physics.

Original languageEnglish
Pages (from-to)221116
Number of pages3
JournalApplied Physics Letters
Volume88
Issue number22
DOIs
Publication statusPublished - 29 May 2006

Keywords

  • RADIATION FORCES
  • MANIPULATION
  • PARTICLES
  • SPHERE

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