Multipolar Origin of the Unexpected Transverse Force Resulting from Two-Wave Interference
Optics
2020-08-12 v1
Abstract
We propose a theoretical study on the electromagnetic forces resulting from the superposition of a TE and TM plane waves interacting with a sphere. Specifically, we first show that, under such an illumination condition, the sphere is subjected to a force transverse to the propagation direction of the waves. We then analyze the physical origin of this counter-intuitive behavior using a multipolar decomposition of the electromagnetic modes involved in that scattering process. This analysis reveals that interference effects, due to the two-wave illumination, lead to a Kerker-like asymmetric scattering behavior resulting in this peculiar transverse force.
Cite
@article{arxiv.2005.02881,
title = {Multipolar Origin of the Unexpected Transverse Force Resulting from Two-Wave Interference},
author = {Karim Achouri and Andrei Kiselev and Olivier J. F. Martin},
journal= {arXiv preprint arXiv:2005.02881},
year = {2020}
}