Volumetric multiple optical traps produced by Devil's lenses

W. D. Furlan; F. Gimenez; A. Calatayud; L. Remon; J. A. Monsoriu

doi:10.2971/jeos.2010.10037s

Journal of the European Optical Society - Rapid publications, Vol 5 (2010)

Volumetric multiple optical traps produced by Devil's lenses

W. D. Furlan, F. Gimenez, A. Calatayud, L. Remon, J. A. Monsoriu

Abstract

We propose the use of a new diffractive optical element coined Devil's Vortex-Lens (DVL) to produce optical tweezers. In its more general form it results as the combination of a Devil’s lens and a helical vortex phase mask. It is shown that under monochromatic illumination a DVL generates a focal volume with several concatenated doughnut modes that are axially distributed according to the self-similarity of the lens. The orbital angular momentum associated to each link in the chain is investigated.

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