Axicon lens on optical fiber forming optical tweezers, made by focused ion beam milling

S. Cabrini*, C. Liberale, D. Cojoc, A. Carpentiero, M. Prasciolu, S. Mora, V. Degiorgio, F. De Angelis, E. Di Fabrizio

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

99 Scopus citations


The purpose of this article is to show that it is possible to make efficient optical tweezers using a properly modified single mode fiber. By using a micro-lens, fabricated directly on the cleaved end of an optical fiber, by a focused ion beam milling process, efficient optical tweezers can be obtained. A 30 keV focused Ga+ ion beam is used to mill a continuous profile microstructure. An axicon with 10 μm diameters and 5 μm high is fabricated, which permits the transformation of a Gaussian mode in a Bessel mode beam. This particular mode was used to form an optical trap. Measures of the propagation profile and of the trapping effect will be discussed.

Original languageEnglish (US)
Pages (from-to)804-807
Number of pages4
JournalMicroelectronic Engineering
Issue number4-9 SPEC. ISS.
StatePublished - Apr 2006
Externally publishedYes


  • Axicon lens
  • FIB milling
  • Optical tweezers
  • Patterned optical fiber

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Surfaces, Coatings and Films
  • Electrical and Electronic Engineering


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