Excitation of single multipolar modes with engineered cylindrically symmetric fields
arXiv:1207.3148 · doi:10.1364/OE.20.024536
Abstract
We present a new method to address multipolar resonances and to control the scattered field of a spherical scatterer. This method is based on the engineering of the multipolar content of the incident beam. We propose experimentally feasible techniques to generate light beams which contain only a few multipolar modes. The techniques uses incident beams with a well defined component of the angular momentum and appropriate focusing with aplanatic lenses. The control of the multipolar content of light beams allow for the excitation of single Mie resonances and unprecedented control of the scattered field from spherical particles.
arXiv comment14 pages, 4 figures, http://dx.doi.org/10.1364/OE.20.024536
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