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O: Fachverband Oberflächenphysik

O 58: [DS] Plasmonics and Nanophotonics (jointly with HL and O)

O 58.2: Vortrag

Mittwoch, 16. März 2011, 17:30–17:45, GER 38

Analysis of optimization techniques for coherent optical control in nanostructures — •Tobias Fankhänel, Torsten Meier, and Jens Förstner — University of Paderborn, Department of Physics and CeOPP, Warburger Str. 100, D-33098 Paderborn, Germany

We compare the efficiency of optimization approaches for shaping coherent optical control in nanostructures. The optical response of various structures is calculated using the Finite-Difference Time-Domain (FDTD, [1]) method. Standard optimization algorithms (L-BFGS gradient method [2], genetic algorithm [3]) are used to maximize target function like the flux transmission or spatio-temporal response; the algorithms' convergence time and computational effort is analyzed.

[1] A. Taflove, S. C. Hagness. Computational electrodynamics: the finite-difference time-domain method, third edition (Artech House Inc., Norwood 2005)

[2] J. Nocedal. Updating Quasi-Newton Matrices with Limited Storage (1980), Mathematics of Computation 35, pp. 773-782.

[3] GALib, http://lancet.mit.edu/ga/