Particle swarm optimization to focus coherent light through disordered media

We introduce particle swarm optimization for phase modulation to focus light through disordered media. Using 4096 independently controlled segments of incident wavefront, the intensity at the target is 123 times enhanced over the original intensity of the same output channel. The particle swarm optimization and existing phase control algorithms of focusing through scattering media are compared by the experiment. It is found that particle swarm optimization achieves the highest enhancement with less time compared to genetic algorithm.

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