Calculation of optical trapping landscapes

Gregor Knöner; Timo A. Nieminen; Simon Parkin; Norman R. Heckenberg; Halina Rubinsztein-Dunlop

doi:10.1117/12.680114

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30 August 2006 Calculation of optical trapping landscapes

Gregor Knöner, Timo A. Nieminen, Simon Parkin, Norman R. Heckenberg, Halina Rubinsztein-Dunlop

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Proceedings Volume 6326, Optical Trapping and Optical Micromanipulation III; 63260K (2006) https://doi.org/10.1117/12.680114
Event: SPIE Optics + Photonics, 2006, San Diego, California, United States

Abstract

Manipulation of micrometer sized particles with optical tweezers can be precisely modeled with electro dynamic theory using Mie's solution for spherical particles or the T-matrix method for more complex objects. We model optical tweezers for a wide range of parameters including size, relative refractive index and objective numerical aperture. We present the resulting landscapes of the trap stiffness and maximum applicable trapping force in the parameter space. These landscapes give a detailed insight into the requirements and possibilities of optical trapping and provide detailed information on trapping of nanometer sized particles or trapping of high index particles like diamond.

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Gregor Knöner, Timo A. Nieminen, Simon Parkin, Norman R. Heckenberg, and Halina Rubinsztein-Dunlop "Calculation of optical trapping landscapes", Proc. SPIE 6326, Optical Trapping and Optical Micromanipulation III, 63260K (30 August 2006); https://doi.org/10.1117/12.680114

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KEYWORDS

Particles

Optical tweezers

Refractive index

Spherical lenses

Objectives

Scattering

Mie scattering

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