We use evolutionary algorithms to design photonic crystal structures with large band gaps. Starting from randomly generated photonic crystals, the algorithm yielded a photonic crystal with a band gap (defined as the gap to midgap ratio) as large as 0.3189. This band gap is an improvement of 12.5% over the best human design using the same index contrast platform.
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Research Article| February 03 2005
Two-dimensional photonic crystals designed by evolutionary algorithms
Stefan Preble, Michal Lipson, Hod Lipson; Two-dimensional photonic crystals designed by evolutionary algorithms. Appl. Phys. Lett. 7 February 2005; 86 (6): 061111. https://doi.org/10.1063/1.1862783
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