Focusing light through random scattering media by simulated annealing algorithm

We introduce a simulated annealing algorithm for wavefront control to focus light through highly scattering media. Using 4096 independently controlled segments of modulated light, the intensity at the target is 125 times enhanced over the original intensity at a predefined target. The simulated anne...

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Bibliographic Details
Published in:Journal of applied physics 2018-08, Vol.124 (8)
Main Authors: Fang, Longjie, Zuo, Haoyi, Yang, Zuogang, Zhang, Xicheng, Pang, Lin
Format: Article
Language:English
Subjects:
Applied physics
Computer simulation
Control algorithms
Focusing
Genetic algorithms
Luminous intensity
Phase control
Scattering
Simulated annealing
Simulation
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Summary:We introduce a simulated annealing algorithm for wavefront control to focus light through highly scattering media. Using 4096 independently controlled segments of modulated light, the intensity at the target is 125 times enhanced over the original intensity at a predefined target. The simulated annealing algorithm and existing phase control algorithms of focusing through scattering media are compared in detail experimentally. It is found that the simulated annealing algorithm achieves the highest enhancement with less time compared to a genetic algorithm.
ISSN:0021-8979
1089-7550
DOI:10.1063/1.5019238