Space-Time Metasurfaces for Power Combining of Waves
Loading...
Access rights
openAccess
publishedVersion
URL
Journal Title
Journal ISSN
Volume Title
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
This publication is imported from Aalto University research portal.
View publication in the Research portal (opens in new window)
View/Open full text file from the Research portal (opens in new window)
View publication in the Research portal (opens in new window)
View/Open full text file from the Research portal (opens in new window)
Date
Major/Subject
Mcode
Degree programme
Language
en
Pages
8
Series
ACS Photonics, Volume 8, issue 10, pp. 3034-3041
Abstract
In passive, linear, and monochromatic systems, complete and phase-insensitive combining of powers carried by waves from several input channels into a single output channel is forbidden by the energy conservation law. Here, we demonstrate that the complete combination of both coherent and incoherent plane waves can be achieved using metasurfaces with properties varying in space and time. The proposed structure reflects waves of the same frequency but incident at different angles toward a single direction. The frequencies of the output waves are shifted by the metasurface, ensuring perfect incoherent power combining. The proposed concept of power combining is general and can be applied for electromagnetic waves from the microwave to optical domains, as well as for waves of other physical natures.Description
Funding Information: This work was supported by the Academy of Finland (Project 330260) and the U.S. Air Force Office of Scientific Research MURI project (Grant No. FA9550-18-1-0379). Publisher Copyright: © 2021 The Authors. Published by American Chemical Society.
Other note
Citation
Wang, X, Asadchy, V S, Fan, S & Tretyakov, S A 2021, 'Space-Time Metasurfaces for Power Combining of Waves', ACS Photonics, vol. 8, no. 10, pp. 3034-3041. https://doi.org/10.1021/acsphotonics.1c00981