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분자 분광학 및 동력학 연구단
분자 분광학 및 동력학 연구단
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Focusing of light energy inside a scattering medium by controlling the time-gated multiple light scattering

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Title
Focusing of light energy inside a scattering medium by controlling the time-gated multiple light scattering
Author(s)
Seungwon Jeong; Ye-Ryoung Lee; Wonjun Choi; Sungsam Kang; Jin Hee Hong; Jin-Sung Park; Yong-Sik Lim; Hong-Gyu Park; Wonshik Choi
Publication Date
2018-05
Journal
Nature Photonics, v.12, no.5, pp.277 - 283
Publisher
NATURE PUBLISHING GROUP
Abstract
The efficient delivery of light energy is a prerequisite for the non-invasive imaging and stimulating of target objects embedded deep within a scattering medium. However, the injected waves experience random diffusion by multiple light scattering, and only a small fraction reaches the target object. Here, we present a method to counteract wave diffusion and to focus multiple-scattered waves at the deeply embedded target. To realize this, we experimentally inject light into the reflection eigenchannels of a specific flight time to preferably enhance the intensity of those multiple-scattered waves that have interacted with the target object. For targets that are too deep to be visible by optical imaging, we demonstrate a more than tenfold enhancement in light energy delivery in comparison with ordinary wave diffusion cases. This work will lay a foundation to enhance the working depth of imaging, sensing and light stimulation. © 2018 Macmillan Publishers Limited, part of Springer Nature. (c) All rights reserved.
URI
https://pr.ibs.re.kr/handle/8788114/4537
ISSN
1749-4885
Appears in Collections:
Center for Molecular Spectroscopy and Dynamics(분자 분광학 및 동력학 연구단) > Journal Papers (저널논문)
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