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Preferential coupling of an incident wave to reflection eigenchannels of disordered media
Light waves incident to a highly scattering medium are incapable of penetrating deep into the medium due to the multiple scattering process. This poses a fundamental limitation to optically imaging, sensing, and manipulating targets embedded in opaque scattering layers such as biological tissues. On...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group
2015
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4650648/ https://www.ncbi.nlm.nih.gov/pubmed/26078088 http://dx.doi.org/10.1038/srep11393 |
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author | Choi, Wonjun Kim, Moonseok Kim, Donggyu Yoon, Changhyeong Fang-Yen, Christopher Park, Q-Han Choi, Wonshik |
author_facet | Choi, Wonjun Kim, Moonseok Kim, Donggyu Yoon, Changhyeong Fang-Yen, Christopher Park, Q-Han Choi, Wonshik |
author_sort | Choi, Wonjun |
collection | PubMed |
description | Light waves incident to a highly scattering medium are incapable of penetrating deep into the medium due to the multiple scattering process. This poses a fundamental limitation to optically imaging, sensing, and manipulating targets embedded in opaque scattering layers such as biological tissues. One strategy for mitigating the shallow wave penetration is to exploit eigenchannels with anomalously high transmittance existing in any scattering medium. However, finding such eigenchannels has been a challenging task due to the complexity of disordered media. Moreover, it is even more difficult to identify those eigenchannels from the practically relevant reflection geometry of measurements. In this Letter, we present an iterative wavefront control method that either minimizes or maximizes the total intensity of the reflected waves. We proved that this process led to the preferential coupling of incident wave to either low or high-reflection eigenchannels, and observed either enhanced or reduced wave transmission as a consequence. Since our approach is free from prior characterization measurements such as the recording of transmission matrix, and also able to keep up with sample perturbation, it is readily applicable to in vivo applications. Enhancing light penetration will help improving the working depth of optical sensing and treatment techniques. |
format | Online Article Text |
id | pubmed-4650648 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2015 |
publisher | Nature Publishing Group |
record_format | MEDLINE/PubMed |
spelling | pubmed-46506482015-11-24 Preferential coupling of an incident wave to reflection eigenchannels of disordered media Choi, Wonjun Kim, Moonseok Kim, Donggyu Yoon, Changhyeong Fang-Yen, Christopher Park, Q-Han Choi, Wonshik Sci Rep Article Light waves incident to a highly scattering medium are incapable of penetrating deep into the medium due to the multiple scattering process. This poses a fundamental limitation to optically imaging, sensing, and manipulating targets embedded in opaque scattering layers such as biological tissues. One strategy for mitigating the shallow wave penetration is to exploit eigenchannels with anomalously high transmittance existing in any scattering medium. However, finding such eigenchannels has been a challenging task due to the complexity of disordered media. Moreover, it is even more difficult to identify those eigenchannels from the practically relevant reflection geometry of measurements. In this Letter, we present an iterative wavefront control method that either minimizes or maximizes the total intensity of the reflected waves. We proved that this process led to the preferential coupling of incident wave to either low or high-reflection eigenchannels, and observed either enhanced or reduced wave transmission as a consequence. Since our approach is free from prior characterization measurements such as the recording of transmission matrix, and also able to keep up with sample perturbation, it is readily applicable to in vivo applications. Enhancing light penetration will help improving the working depth of optical sensing and treatment techniques. Nature Publishing Group 2015-06-16 /pmc/articles/PMC4650648/ /pubmed/26078088 http://dx.doi.org/10.1038/srep11393 Text en Copyright © 2015, Macmillan Publishers Limited http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ |
spellingShingle | Article Choi, Wonjun Kim, Moonseok Kim, Donggyu Yoon, Changhyeong Fang-Yen, Christopher Park, Q-Han Choi, Wonshik Preferential coupling of an incident wave to reflection eigenchannels of disordered media |
title | Preferential coupling of an incident wave to reflection eigenchannels of disordered media |
title_full | Preferential coupling of an incident wave to reflection eigenchannels of disordered media |
title_fullStr | Preferential coupling of an incident wave to reflection eigenchannels of disordered media |
title_full_unstemmed | Preferential coupling of an incident wave to reflection eigenchannels of disordered media |
title_short | Preferential coupling of an incident wave to reflection eigenchannels of disordered media |
title_sort | preferential coupling of an incident wave to reflection eigenchannels of disordered media |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4650648/ https://www.ncbi.nlm.nih.gov/pubmed/26078088 http://dx.doi.org/10.1038/srep11393 |
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