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arXiv · 1204.5380

Beam shaping using genetically optimized two-dimensional photonic crystals

Denis Gagnon·Joey Dumont·Louis J. Dubé
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Abstract

We propose the use of two-dimensional photonic crystals with engineered defects for the generation of an arbitrary-profile beam from a focused input beam. The cylindrical harmonics expansion of complex-source beams is derived and used to compute the scattered wavefunction of a 2D photonic crystal via the multiple scattering method. The beam shaping problem is then solved using a genetic algorithm. We illustrate our procedure by generating different orders of Hermite-Gauss profiles, while maintaining reasonable losses and tolerance to variations in the input beam and the slab refractive index.

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Denis Gagnon, Joey Dumont, Louis J. Dubé. 2012-04-24. Beam shaping using genetically optimized two-dimensional photonic crystals. https://doi.org/10.1364/josaa.29.002673

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