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research article
Multipolar expansions for scattering and optical force calculations beyond the long wavelength approximation
September 21, 2022
We review three different approaches for the calculation of electromagnetic multipoles, namely, the Cartesian primitive multipoles, the Cartesian irreducible multipoles, and the spherical multipoles. We identify the latter as the best suited to describe the scattering of electromagnetic radiation, as exemplified for an amorphous silicon sphere. These multipoles are then used to calculate the optical force acting on semiconductor, dielectric or metallic particles in a wide wavelength range, from the dipolar regime down to the Mie regime.
Type
research article
Web of Science ID
WOS:000861758400004
Authors
Publication date
2022-09-21
Publisher
Published in
Volume
106
Issue
11
Article Number
115428
Peer reviewed
REVIEWED
EPFL units
Available on Infoscience
October 24, 2022
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