Regensburg 2007 – scientific programme

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O: Fachverband Oberflächenphysik

O 23: Symposium: Ultrafast Nanooptics III

O 23.2: Talk

Tuesday, March 27, 2007, 11:30–11:45, H38

Efficient modelling of nonlinear wave propagation and radiation dynamics in nano-photonic systems — •Kurt Busch, Michael König, Jens Niegemann, Martin Pototschnig, and Lasha Tkeshelashvili — Institut für Theoretische Festkörperphysik, Universität Karlsruhe, 76128 Karlsruhe, Germany

Time-domain simulations play a very prominent role in the investigation and design of three-dimensional micro- and nano-photonic structures. In many cases, these strongly scattering systems need to be modeled on long time-scales with high precision. Such high accuracy, combined with unconditional stability and efficient performance, can be achieved via an operator-exponential method based on Krylov-subspace techniques[1].This approach is capable of handling optically anisotropic, lossy and dispersive materials as well as CFS-PML boundary conditions. Therefore, it is very well suited to study most experimentally relevant photonic nano-structures. Furthermore, it is straightforward to extend the scheme to handle nonlinear wave propagation, wave mixing phenomena and coupled systems, where similar accuracy and performance characteristics are achieved.

[1] J. Niegemann, L. Tkeshelashvili, and K. Busch, "Higher-order time-domain simulations of Maxwell’s equations using Krylov-subspace methods", J. Comput. Theor. Nanosci., in press