<div class="csl-bib-body">
<div class="csl-entry">Rotter, S. (2023, March 20). <i>Coherent perfect absorption and transmission in disordered media</i> [Conference Presentation]. Theory of wave scattering in complex and random media, Cambridge, United Kingdom of Great Britain and Northern Ireland (the).</div>
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dc.identifier.uri
http://hdl.handle.net/20.500.12708/175819
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dc.description.abstract
In my talk I will present recent work on the perfect absorption and transmission of waves through interferometric cancellation of backscattering. In the first case [1], we demonstrate how to construct an anti-reflection structure for a disordered medium. Similar to an anti-reflection coating for conventional eye-glasses, this structure leads to perfect transmission across the scattering system by suppressing back-scattering for any incoming wavefront. In the second case [2], we demonstrate how to achieve perfect absorption of radiation for the case that an absorber is embedded inside a disordered medium. More recently, we have extended this concept to design a device that can turn even a weakly absorbing film into a “coherent perfect absorber” by placing a degenerate cavity around it [3]. This special cavity perfectly couples incoming light fields with arbitrary wavefronts into the absorber – even for the case that light is a dynamically varying speckle pattern. Successful experimental implementations have been carried out with the groups of Matthieu Davy, Ulrich Kuhl and Ori Katz.
[1] M. Horodynski, M. Kühmayer, C. Ferise, S. Rotter, and M. Davy, Nature 607, 281 (2022)
[2] K. Pichler, M. Kühmayer, J. Böhm, A. Brandstötter, P. Ambichl, U. Kuhl, and S. Rotter, Nature 567, 351 (2019)
[3] Y. Slobodkin, G. Weinberg, H. Hörner, K. Pichler, S. Rotter, and O. Katz, Science 377, 995 (2022)
en
dc.description.sponsorship
FWF Fonds zur Förderung der wissenschaftlichen Forschung (FWF)
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dc.language.iso
en
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dc.subject
Wave scattering
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dc.subject
Complex optics
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dc.title
Coherent perfect absorption and transmission in disordered media
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dc.type
Presentation
en
dc.type
Vortrag
de
dc.relation.grantno
P 32300-N27
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dc.type.category
Conference Presentation
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tuw.publication.invited
invited
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tuw.project.title
Wellenkontrolle in Systemen mit Absorption und Unordnung
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tuw.researchinfrastructure
Vienna Scientific Cluster
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tuw.researchTopic.id
Q1
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tuw.researchTopic.id
C3
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tuw.researchTopic.name
Photonics
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tuw.researchTopic.name
Computational System Design
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tuw.researchTopic.value
80
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tuw.researchTopic.value
20
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tuw.linking
https://www.newton.ac.uk/seminar/38443/
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tuw.publication.orgunit
E136 - Institut für Theoretische Physik
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tuw.author.orcid
0000-0002-4123-1417
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tuw.event.name
Theory of wave scattering in complex and random media
