Experimental study of the optical forces exerted by a Gaussian beam within the Rayleigh range

L. Ferrara*, E. Baldini, P. Minzioni, F. Bragheri, C. Liberale, E. Di Fabrizio, I. Cristiani

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

13 Scopus citations

Abstract

Numerical tools for the evaluation of optical forces exerted by non-focused Gaussian beams are becoming increasingly important for the design of integrated devices dedicated to cell manipulation without physical contact. Here we consider two methods for the evaluation of optical forces based on a ray-optics approach and we compare them with experimental results. We show that optical forces can be calculated with good accuracy also within the Rayleigh range of the Gaussian beam and for a wide range of particle sizes.

Original languageEnglish (US)
Article number075712
JournalJournal of Optics
Volume13
Issue number7
DOIs
StatePublished - Jul 2011
Externally publishedYes

Keywords

  • Optical forces
  • ray-optics description

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics

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