Excellence in Higher Degree Research – Science & Engineering (Highly Commended 2014)

Xavier Zambrano-Puyalto, Faculty of Science and Engineering

Characterization of nano-structures with light’s symmetries

Light beams can be symmetric under different transformations: translations, rotations, mirror symmetries, duality transformations, etc. In my research project, a systematic way of characterizing these symmetries has been developed. Then, it has been shown that symmetric light beams can be used to control light-matter interactions at the nano-scale. Particular applications have been developed, both theoretically and experimentally. Inducing a dual behaviour on a non-dual sample, the excitation of high multipolar order resonances and the measurement of circular dichroism using vortex beams are among them.

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