Zobrazeno 1 - 10
of 73
pro vyhledávání: '"Karim Achouri"'
Publikováno v:
New Journal of Physics, Vol 24, Iss 2, p 025006 (2022)
We present a frequency-domain modeling technique for second-order nonlinear metasurfaces. The technique is derived from the generalized sheet transition conditions (GSTCs), which have been so far mostly used for modeling linear metasurfaces. In this
Externí odkaz:
https://doaj.org/article/edbfaf6729e64eb4ae37515490f0d222
Autor:
Ali Yahyaoui, Hatem Rmili, Karim Achouri, Muntasir Sheikh, Abdullah Dobaie, Adnan Affandi, Taoufik Aguili
Publikováno v:
International Journal of Antennas and Propagation, Vol 2017 (2017)
We present the design of all-dielectric Quarter-Wave Plate (QWP) and Half-Wave Plate (HWP) metasurfaces based on elliptic dielectric resonators (EDRs) for the transmission control of electromagnetic waves over the frequency band 20–30 GHz. First, a
Externí odkaz:
https://doaj.org/article/8bf238c8d42a40f4bd99e4e4244caab9
Publikováno v:
New Journal of Physics, Vol 21, Iss 11, p 113048 (2019)
Analog optical signal processing has dramatically transcended the speed and energy limitations accompanied with its digital microelectronic counterparts. Motivated by recent metasurface’s evolution, the angular scattering diversity of a reciprocal
Externí odkaz:
https://doaj.org/article/6c18c6f893044076b135d0dfb74934e8
Publikováno v:
IEEE Transactions on Antennas and Propagation. 70:11946-11956
There is today a growing need to accurately model the angular scattering response of metasurfaces for optical analog processing applications. However, the current metasurface modeling techniques are not well suited for such a task since they are limi
Publikováno v:
IEEE Transactions on Antennas and Propagation. 70:10583-10591
While metasurfaces (MSs) are constructed from deeply subwavelength unit cells, they are generally electrically large and full-wave simulations of the complete structure are computationally expensive. Thus, to reduce this high computational cost, nonu
Autor:
Andrea Alu, Sven Burger, Shanhui Fan, Sebastien Cueff, Jean-Yves Duboz, Felix Binkowski, Adam Overvig, Karim Achouri, Remi Colom, Elena Mikheeva, Patrice Genevet
Optical components interact with light through radiative channels, and as such they experience intrinsic losses, giving rise to complex-valued eigenfrequencies and singularities. Spatial inversion symmetry breaking -implemented herein by controlling
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8968ed372e3e7f06b1e2344e247e7a72
https://doi.org/10.1364/opticaopen.22828976
https://doi.org/10.1364/opticaopen.22828976
Publikováno v:
ACS Photonics. 9:2438-2447
Optical metasurfaces rely on subwavelength scale nanostructures, which puts significant constraints on nanofabrication accuracies. These constraints are becoming increasingly important, as metasurfaces are maturing toward real applications that requi
Publikováno v:
Optics express. 30(18)
We look beyond the standard time-average approach and investigate optical forces in the time domain. The formalism is developed for both the Abraham and Minkowski momenta, which appear to converge in the time domain. We unveil an extremely rich - and
Publikováno v:
Metamaterials, Metadevices, and Metasystems 2022.
Publikováno v:
Plasmonics: Design, Materials, Fabrication, Characterization, and Applications XX.