Two-dimensional photonic crystals designed by evolutionary algorithms

Preble, Stefan; Lipson, Michal; Lipson, Hod
February 2005
Applied Physics Letters;2/7/2005, Vol. 86 Issue 6, p061111
Academic Journal
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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