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Volumetric multiple optical traps produced by Devil’s lenses

2010; Springer Nature; Volume: 5; Linguagem: Inglês

10.2971/jeos.2010.10037s

1990-2573

Walter D. Furlan, Fernando Giménez Palomares, Arnau Calatayud, Laura Martin, Juan A. Monsoriu,

Electrowetting and Microfluidic Technologies

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.