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Proceedings Paper

Comparative assessment of five algorithms to control an SLM for focusing coherent light through scattering media
Author(s): Zahra Fayyaz; Nafiseh Mohammadian; Mohammad R. N. Avanaki
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Paper Abstract

Light propagation in turbid media, such as biological tissues, experience scattering due to inhomogeneous distribution of refractive indices. Control of light scattering is important for focusing the light or imaging through scattering medium. By spatially shaping the wave-front of the incident beam, using spatial light modulator (SLM), the scattered light can be focused to a point. Iterative optimization is a popular way of obtaining the most optimum phase map on the SLM. In this study, we implement six optimization algorithms including continuous sequential, partitioning algorithm, transmission matrix estimation method, genetic algorithms, particle swarm optimization, and simulated annealing to obtain the optimum phase map of the SLM. The main characteristics of the algorithms such as convergence time, improvement ratio and performance are compared and discussed.

Paper Details

Date Published: 22 February 2018
PDF: 14 pages
Proc. SPIE 10494, Photons Plus Ultrasound: Imaging and Sensing 2018, 104946I (22 February 2018); doi: 10.1117/12.2291346
Show Author Affiliations
Zahra Fayyaz, Sharif Univ. of Technology (Iran, Islamic Republic of)
Nafiseh Mohammadian, Wayne State Univ. (United States)
CREOL, The College of Optics and Photonics, Univ. of Central Florida (United States)
Mohammad R. N. Avanaki, Wayne State Univ. (United States)
Barbara Ann Karmanos Cancer Institute (United States)

Published in SPIE Proceedings Vol. 10494:
Photons Plus Ultrasound: Imaging and Sensing 2018
Alexander A. Oraevsky; Lihong V. Wang, Editor(s)

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