Universal sensitivity of speckle intensity correlations to wavefrontchange in light diffusers

Collection with item attached
2017
Item details URL
http://open-repository.kisti.re.kr/cube/handle/open_repository/486735.do
DOI
10.1038/srep44435
Title
Universal sensitivity of speckle intensity correlations to wavefrontchange in light diffusers
Description
This work was supported by KAIST, BK21+ program, Tomocube, and theNational Research Foundation of Korea (2015R1A3A2066550,2014M3C1A3052567, 2014K1A3A1A09063027).
abstract
Here, we present a concept based on the realization that a complex medium can be used as a simple interferometer. Changes in the wavefront of an incident coherent beam can be retrieved by analyzing changes in speckle patterns when the beam passes through a light diffuser. We demonstrate that the spatial intensity correlations of the speckle patterns are independent of the light diffusers, and are solely determined by the phase changes of an incident beam. With numerical simulations using the random matrix theory, and an experimental pressure-driven wavefront-deforming setup using a microfluidic channel, we theoretically and experimentally confirm the universal sensitivity of speckle intensity correlations, which is attributed to the conservation of optical field correlation despite multiple light scattering. This work demonstrates that a light diffuser works as a simple interferometer, and presents opportunities to retrieve phase information of optical fields with a compact scattering layer in various applications in metrology, analytical chemistry, and biomedicine.
provenance
Made available in Cube on 2018-09-28T16:15:32Z (GMT). No. of bitstreams: 0
language
English
author
Kim, KyungDuk
Yu, Hyeonseung
Lee, KyeoReh
Park, YongKeun
accessioned
2018-09-28T16:15:32Z
available
2018-09-28T16:15:32Z
issued
2017
citation
SCIENTIFIC REPORTS(7)
issn
2045-2322
uri
http://open-repository.kisti.re.kr/cube/handle/open_repository/486735.do
Funder
미래창조과학부
Funding Program
국가간협력기반조성
Project ID
1711047804
Jurisdiction
Rep.of Korea
Project Name
Development of portable holographic microscope for the diagnosis of pathogenetic materials
rights
openAccess
type
article


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