Time-reversing a monochromatic subwavelength optical focus by opticalphase conjugation of multiply-scattered light

Collection with item attached
2017
Item details URL
http://open-repository.kisti.re.kr/cube/handle/open_repository/486286.do
DOI
10.1038/srep41384
Title
Time-reversing a monochromatic subwavelength optical focus by opticalphase conjugation of multiply-scattered light
Description
This work was supported by KAIST, and the National Research Foundationof Korea (2015R1A3A2066550, 2014K1A3A1A09063027, 2012-M3C1A1-048860,2014M3C1A3052537, 2016R1A2A1A05005320).
abstract
Due to its time-reversal nature, optical phase conjugation generates a monochromatic light wave which retraces its propagation paths. Here, we demonstrate the regeneration of a subwavelength optical focus by phase conjugation. Monochromatic light from a subwavelength source is scattered by random nanoparticles, and the scattered light is phase conjugated at the far-field region by coupling its wavefront into a single-mode optical reflector using a spatial light modulator. Then the conjugated beam retraces its propagation paths and forms a refocus on the source at the subwavelength scale. This is the first direct experimental realisation of subwavelength focusing beyond the diffraction limit with far-field time reversal in the optical domain.
provenance
Made available in Cube on 2018-09-28T16:03:32Z (GMT). No. of bitstreams: 0
language
English
author
Park, Jongchan
Park, Chunghyun
Lee, KyeoReh
Cho, Yong-Hoon
Park, YongKeun
accessioned
2018-09-28T16:03:32Z
available
2018-09-28T16:03:32Z
issued
2017
citation
Scientific Reports(7)
issn
2045-2322
uri
http://open-repository.kisti.re.kr/cube/handle/open_repository/486286.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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