Abstract
This paper analyzes the optical behavior of an electrically charged spherical particle. The theoretical conditions for charge-induced resonances are specified through the Mie expansion coefficient an that is treated analytically. It is shown that the conditions for normal mode generation change with the order of the expansion coefficient, thus resulting in a complex optical response of charged spheres. The previously undisclosed analytical formulation of resonance conditions is a main strength of this paper and our approach. The theoretical findings could have important implications for laser beam modulation devices, as well as photonics.
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