<div class="csl-bib-body">
<div class="csl-entry">Rotter, S. (2023, October 12). <i>Coherent perfect absorption and transmission of light with arbitrary wavefronts</i> [Presentation]. LOMA Institute Colloquium, Bordeaux, France.</div>
</div>
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dc.identifier.uri
http://hdl.handle.net/20.500.12708/189034
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dc.description.abstract
In my talk I will present two recent works focused on the perfect absorption and transmission of waves through interferometric cancellation of backscattering. In the first case [1], we demonstrate that even a weakly absorbing film can be turned into a “coherent perfect absorber” by building a degenerate cavity around it. 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. In the second case [2], we demonstrate how to construct an anti-reflection structure for a complex scattering system like 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. Successful experimental implementations of these concepts will be discussed in both cases.
[1] Y. Slobodkin, G. Weinberg, H. Hörner, K. Pichler, S. Rotter, and O. Katz, Science 377, 995 (2022)
[2] M. Horodynski, M. Kühmayer, C. Ferise, S. Rotter, and M. Davy, Nature 607, 281 (2022)
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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
Wavefront Shaping
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dc.subject
Disordered Media
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dc.subject
scattering and absorption
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dc.title
Coherent perfect absorption and transmission of light with arbitrary wavefronts
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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
Presentation
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tuw.publication.invited
invited
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tuw.project.title
Wellenkontrolle in Systemen mit Absorption und Unordnung
