Computational electrodynamics of disordered systems
No naturally occurring object is perfectly smooth at all length scales. To predict how electromagnetic waves interact with such disordered interfaces or bulk materials, is a very hard and long standing problem. Its solution has practical and fundamental consequences in fields as diverse as astronomy, medicine, telecommunication, electronics and nano-science, to mention a few.
In principle the problem is fully determined by the Maxwell's Equations and associated boundary conditions. However, to solve these equations can often be a rather demanding task, and only in a limited number of cases can analytic solutions be obtained. Instead one has to resort to (rigorous and approximative) computer simulation approaches (Computational Electrodynamics).
We have been working on both the forward and inverse scattering problem. In the forward problem, we have focused on multiple scattering effects like enhanced backscattering and the satellite peak phenomenon for which surface plasmon polaritons play a prominent role (plasmonics). Moreover, nano-optical problems have also been of interest.
In the inverse scattering problem a main emphasis has been on designing optical elements with well defined optical properties, the so-called designer surface problem.
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