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Proceedings Paper

Three-dimensional trapping with a focused Bessel beam
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Paper Abstract

A Bessel beam generated with an axicon lens is focused by a low numerical aperture objective lens to create an optical levitation trap. This configuration allows a full three dimensional trapping of solid glass spheres of few microns in diameter immerse in water. We establish a comparison with an optical levitation trap generated with a Gaussian beam under the same focusing conditions. In both cases the particles are lifted up in an axial position above the focal region that depends on the incident power. The spatial stability is investigated in both cases as a function of axial position, which in turn depends on the input optical power.

Paper Details

Date Published: 25 August 2015
PDF: 6 pages
Proc. SPIE 9548, Optical Trapping and Optical Micromanipulation XII, 954828 (25 August 2015); doi: 10.1117/12.2188785
Show Author Affiliations
Yareni A. Ayala, Univ. Nacional Autónoma de México (Mexico)
Alejandro V. Arzola, Univ. Nacional Autónoma de México (Mexico)
Karen V. Sepúlveda, Univ. Nacional Autónoma de México (Mexico)

Published in SPIE Proceedings Vol. 9548:
Optical Trapping and Optical Micromanipulation XII
Kishan Dholakia; Gabriel C. Spalding, Editor(s)

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