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Comparative assessment of five algorithms to control an SLM for focusing coherent light through scattering media

Fayyaz, Z ; Sharif University of Technology | 2018

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  1. Type of Document: Article
  2. DOI: 10.1117/12.2291346
  3. Publisher: SPIE , 2018
  4. Abstract:
  5. 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. © COPYRIGHT SPIE. Downloading of the abstract is permitted for personal use only
  6. Keywords:
  7. Continuous sequential algorithm ; Genetic algorithms ; Optimization algorithms ; Particle swarm optimization ; Partitioning algorithm ; Scattering medium ; Simulated annealing ; Spatial light modulator ; Wavefront shaping ; Axial flow ; Coherent scattering ; Genetic algorithms ; Iterative methods ; Light ; Light modulation ; Light scattering ; Particle swarm optimization (PSO) ; Photons ; Refractive index ; Wavefronts ; Optimization algorithms ; Partitioning algorithms ; Sequential algorithm ; Spatial light modulators ; Wave front shaping ; Light modulators
  8. Source: Photons Plus Ultrasound: Imaging and Sensing 2018, 28 January 2018 through 1 February 2018 ; Volume 10494 , 2018 ; 16057422 (ISSN); 9781510614734 (ISBN)
  9. URL: https://www.spiedigitallibrary.org/conference-proceedings-of-spie/10494/104946I/Comparative-assessment-of-five-algorithms-to-control-an-SLM-for/10.1117/12.2291346.short?SSO=1