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Proceedings Paper

Ray optics in combination with the Gaussian beam propagation method for optical trapping of free-shaped particles in micro fluidic systems
Author(s): D. De Coster; P. Wuytens; H. Ottevaere; H. Thienpont
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Paper Abstract

We present a novel model for the prediction of particle trapping, in which different assets are combined to calculate optical forces and torques on free-shaped particles. This model suits well for designing an integrated dual fiber optical trap into a microfluidic chip. The force and torque estimation can easily be integrated in the scheme simulating the surrounding optofluidic chip. The propagation of the trapping laser light going through this micro-optical chip is ensured by the ‘Gaussian Beam Propagation Method’ allowing a realistic propagation of various beam profiles in and near the Rayleigh range. Back-reflected rays into and outside the particle are considered by using a non-sequential ray-tracing model. Our model enables the prediction of circumstances in which particles are trapped and how they behave in the optical trap.

Paper Details

Date Published: 12 September 2013
PDF: 7 pages
Proc. SPIE 8810, Optical Trapping and Optical Micromanipulation X, 88102Q (12 September 2013); doi: 10.1117/12.2022430
Show Author Affiliations
D. De Coster, Vrije Univ. Brussel (Belgium)
P. Wuytens, Vrije Univ. Brussel (Belgium)
H. Ottevaere, Vrije Univ. Brussel (Belgium)
H. Thienpont, Vrije Univ. Brussel (Belgium)

Published in SPIE Proceedings Vol. 8810:
Optical Trapping and Optical Micromanipulation X
Kishan Dholakia; Gabriel C. Spalding, Editor(s)

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