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Optical trapping of dielectric particles in arbitrary fields

Rohrbach, Alexander, Stelzer, Ernst H. K.·2001·Journal of the Optical Society of America A

Abstract

We present a new method to calculate trapping forces of dielectric particles with diameters D < or = lambda in arbitrary electromagnetic, time-invariant fields. The two components of the optical force, the gradient force and the scattering force, are determined separately. Both the arbitrary incident field and the scatterer are represented by plane-wave spectra. The scattering force is determined by means of the momentum transfer in either single- or double-scattering processes. Therefore the second-order Born series is evaluated and solved in the frequency domain by Ewald constructions. Numerical results of our two-force-component approach and an established calculation method are compared and show satisfying agreement. Our procedure is applied to investigate axial trapping by focused waves experiencing effects of aperture illumination and refractive-index mismatch.

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Metadata

Authors
Rohrbach, A., & Stelzer, E. H. K.
Venue
Journal of the Optical Society of America A
Published
2001-04-01
Volume
18
Issue
4
Pages
839
ISSN
  • 1084-7529 (ISSN-L)
  • 1520-8532
OpenAlex
W2127345653
Cited by
184
References
4
FWCI
8.96
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Optical trapping of dielectric particles in arbitrary fields. https://app.cochat.ai/papers/10.1364/josaa.18.000839
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Rohrbach, A., & Stelzer, E. H. K. (2001). Optical trapping of dielectric particles in arbitrary fields. Journal of the Optical Society of America A. https://doi.org/10.1364/josaa.18.000839

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.