Transmission matrix of a scattering medium and its applications in biophotonics

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Title
Transmission matrix of a scattering medium and its applications in biophotonics
Author(s)
Moonseok Kim; Wonjun Choi; Youngwoon Choi; Changhyeong Yoon; Wonshik Choi
Publication Date
2015-05
Journal
OPTICS EXPRESS, v.23, no.10, pp.12648 - 12668
Publisher
OPTICAL SOC AMER
Abstract
A conventional lens has well-defined transfer function with which we can form an image of a target object. On the contrary, scattering media such as biological tissues, multimode optical fibers and layers of disordered nanoparticles have highly complex transfer function, which makes them impractical for the general imaging purpose. In recent studies, we presented a method of experimentally recording the transmission matrix of such media, which is a measure of the transfer function. In this review paper, we introduce two major applications of the transmission matrix: enhancing light energy delivery and imaging through scattering media. For the former, we identified the eigenchannels of the transmission matrix with large eigenvalues and then coupled light to those channels in order to enhance light energy delivery through the media. For the latter, we solved matrix inversion problem to reconstruct an object image from the distorted image by the scattering media. We showed the enlargement of the numerical aperture of imaging systems with the use of scattering media and demonstrated endoscopic imaging through a single multimode optical fiber working in both reflectance and fluorescence modes. Our approach will pave the way of using scattering media as unique optical elements for various biophotonics applications.
URI
https://pr.ibs.re.kr/handle/8788114/2038
ISSN
1094-4087
Appears in Collections:
Center for Molecular Spectroscopy and Dynamics(분자 분광학 및 동력학 연구단) > Journal Papers (저널논문)
Files in This Item:
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