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Proceedings Paper

Bottle beam based optical trapping system for three-dimensional trapping of high and low index microparticles
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Paper Abstract

The quest for applying optical tweezers system for novel applications has aggrandized its trapping capabilities since its inception. Researchers have proposed and applied light based micro-manipulation technique in the field of colloidal sciences, bioscience, MEMS and the count is limitless. In this paper we report the self-imaged optical bottle beam based optical tweezers system. A self-imaged bottle beam possesses three-dimensional intensity-null points along the propagation axis. The transverse intensity profile of the self-imaged bottle beam oscillates along the propagation axis, hence providing three-dimensional trapping potential for high and low indices microparticles at constructive and destructive interference points, respectively. Bottle beam based optical tweezer system adds the beneficial property of Gaussian and Bessel beam based trapping systems by providing three-dimensional trapping potential and self-reconstruction ability, respectively. As self-imaged bottle beam belong to the family of propagation-invariant beams, it can be used to trap chain of high and low indices microparticles three-dimensionally along the propagation directions, which can be used to periodically stack microparticles (of different refractive index) longitudinally.

Paper Details

Date Published: 18 August 2005
PDF: 8 pages
Proc. SPIE 5931, Nanoengineering: Fabrication, Properties, Optics, and Devices II, 593110 (18 August 2005); doi: 10.1117/12.613146
Show Author Affiliations
Balpreet Singh Ahluwalia, Nanyang Technological Univ. (Singapore)
Xiaocong Yuan, Nanyang Technological Univ. (Singapore)
Shaohua Tao, Nanyang Technological Univ. (Singapore)

Published in SPIE Proceedings Vol. 5931:
Nanoengineering: Fabrication, Properties, Optics, and Devices II
Elizabeth A. Dobisz; Louay A. Eldada, Editor(s)

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