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Beam Formation and Vernier Steering Off of a Rough Surface

Wavefront shaping can refocus light after it reflects from an optically rough surface. One proposed use case of this effect is in indirect imaging; if any rough surface could be turned into an illumination source, objects out of the direct line of sight could be illuminated. In this paper, we demons...

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Detalles Bibliográficos
Autores principales: Nagamine, Eric K., Burgi, Kenneth W., Butler, Samuel D.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8399687/
https://www.ncbi.nlm.nih.gov/pubmed/34442493
http://dx.doi.org/10.3390/mi12080871
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author Nagamine, Eric K.
Burgi, Kenneth W.
Butler, Samuel D.
author_facet Nagamine, Eric K.
Burgi, Kenneth W.
Butler, Samuel D.
author_sort Nagamine, Eric K.
collection PubMed
description Wavefront shaping can refocus light after it reflects from an optically rough surface. One proposed use case of this effect is in indirect imaging; if any rough surface could be turned into an illumination source, objects out of the direct line of sight could be illuminated. In this paper, we demonstrate the superior performance of a genetic algorithm compared to other iterative feedback-based wavefront shaping algorithms in achieving reflective inverse diffusion for a focal plane system. Next, the ability to control the pointing direction of the refocused beam with high precision over a narrow angular range is demonstrated, though the challenge of increasing the overall scanning range of the refocused beam remains. The method of beam steering demonstrated in this paper could act as a vernier adjustment to a coarse adjustment offered by another method.
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spelling pubmed-83996872021-08-29 Beam Formation and Vernier Steering Off of a Rough Surface Nagamine, Eric K. Burgi, Kenneth W. Butler, Samuel D. Micromachines (Basel) Article Wavefront shaping can refocus light after it reflects from an optically rough surface. One proposed use case of this effect is in indirect imaging; if any rough surface could be turned into an illumination source, objects out of the direct line of sight could be illuminated. In this paper, we demonstrate the superior performance of a genetic algorithm compared to other iterative feedback-based wavefront shaping algorithms in achieving reflective inverse diffusion for a focal plane system. Next, the ability to control the pointing direction of the refocused beam with high precision over a narrow angular range is demonstrated, though the challenge of increasing the overall scanning range of the refocused beam remains. The method of beam steering demonstrated in this paper could act as a vernier adjustment to a coarse adjustment offered by another method. MDPI 2021-07-24 /pmc/articles/PMC8399687/ /pubmed/34442493 http://dx.doi.org/10.3390/mi12080871 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Nagamine, Eric K.
Burgi, Kenneth W.
Butler, Samuel D.
Beam Formation and Vernier Steering Off of a Rough Surface
title Beam Formation and Vernier Steering Off of a Rough Surface
title_full Beam Formation and Vernier Steering Off of a Rough Surface
title_fullStr Beam Formation and Vernier Steering Off of a Rough Surface
title_full_unstemmed Beam Formation and Vernier Steering Off of a Rough Surface
title_short Beam Formation and Vernier Steering Off of a Rough Surface
title_sort beam formation and vernier steering off of a rough surface
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8399687/
https://www.ncbi.nlm.nih.gov/pubmed/34442493
http://dx.doi.org/10.3390/mi12080871
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