Projects per year
Abstract
Known coherent metasurfaces control interference of waves of a given frequency with other coherent waves at the same frequency, either illuminating from a different direction or created as intermodulation products. In this paper, we introduce a class of metasurfaces that are modulated in time coherently with the illuminating radiation. Importantly, such modulation opens a possibility to
control reflection, absorption, and transmission at multiple frequencies, including illuminations by two or more incoherent waves. In particular, we study dynamic resistive layers and show how to use them to design thin multi-frequency perfect absorbers that overcome the bandwidth limit for static linear absorbers. Furthermore, we demonstrate possibilities of remote tuning of the absorption level. We hope that this work opens up novel avenues in wave engineering using coherent modulation of metasurface parameters.
control reflection, absorption, and transmission at multiple frequencies, including illuminations by two or more incoherent waves. In particular, we study dynamic resistive layers and show how to use them to design thin multi-frequency perfect absorbers that overcome the bandwidth limit for static linear absorbers. Furthermore, we demonstrate possibilities of remote tuning of the absorption level. We hope that this work opens up novel avenues in wave engineering using coherent modulation of metasurface parameters.
Original language | English |
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Article number | 064048 |
Number of pages | 12 |
Journal | Physical Review Applied |
Volume | 17 |
Issue number | 6 |
DOIs | |
Publication status | Published - 24 Jun 2022 |
MoE publication type | A1 Journal article-refereed |
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Dive into the research topics of 'Coherently time-varying metasurfaces'. Together they form a unique fingerprint.Projects
- 2 Finished
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Dynamic metasurfaces: Dynamic metasurfaces with spatial dispersion
Diaz Rubio, A. (Principal investigator)
01/09/2020 → 30/06/2021
Project: Academy of Finland: Other research funding
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TIME: Engineering electromagnetic response of materials using time-modulated components
Tretiakov, S. (Principal investigator), Al Mahmud, S. (Project Member), Mostafa, M. (Project Member), Ptitcyn, G. (Project Member), Wang, X. (Project Member), Cuesta Soto, F. (Project Member), Mirmoosa, M. (Project Member), Freter, L. (Project Member) & Wei, G. (Project Member)
01/09/2020 → 31/08/2024
Project: Academy of Finland: Other research funding