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Proceedings Paper

Particle swarm optimization for focusing by phase modulation through scattering media
Author(s): Ligen Peng; Weijia Dai; Xiaopeng Shao
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Paper Abstract

Particle Swarm Optimization (PSO) is exploited in an optical focusing system, by changing the phase of the incident light, which can break the diffraction limit and enhance focal intensity through highly scattering media. To emphasize that the focusing optical system is mainly composed of a spatial light modulator (SLM), a lens and highly scattering media placed behind the lens. The stepwise sequential algorithm and the continuous sequential algorithm are sensitive to noise and the genetic algorithm converges slowly. Compared with these algorithms theoretically and experimentally, the PSO is robust, effective and able to converge rapidly, which obtains a best solution by following the search for the optimal particle in the solution space. The capacity of beyond-diffraction and increasing intensity of the focus through dynamic scattering media could be conducive to biological microscopy and imaging through turbid environments.

Paper Details

Date Published: 22 May 2014
PDF: 7 pages
Proc. SPIE 9124, Satellite Data Compression, Communications, and Processing X, 91241D (22 May 2014); doi: 10.1117/12.2052989
Show Author Affiliations
Ligen Peng, Xidian Univ. (China)
Weijia Dai, Xidian Univ. (China)
Xiaopeng Shao, Xidian Univ. (China)

Published in SPIE Proceedings Vol. 9124:
Satellite Data Compression, Communications, and Processing X
Bormin Huang; Chein-I Chang; José Fco. López, Editor(s)

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