Results 201 to 210 of about 11,788 (237)

All-dielectric bianisotropic metasurfaces

2017 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting, 2017
The realization of bianisotropic responses with all-dielectric metasurfaces is investigated, and a systematic design approach is developed. It is shown that by cascading anisotropic dielectric layers (subwavelength gratings) one can achieve bianisotropic responses.
Amin Ranjbar, Anthony Grbic
openaire   +1 more source

Multifunctional All-Dielectric Metasurfaces

2018 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting, 2018
Cascaded dielectric metasurfaces that provide distinct polarization conversion/control at different bands are introduced. A step-by-step design approach is presented to realize a wide range of polarization transformations with metasurfaces employing simple geometries.
Amin Ranjbar, Anthony Grbic
openaire   +1 more source

All-dielectric magneto-photonic metasurfaces

Journal of Applied Physics, 2022
All-dielectric metasurfaces have been attracting much attention. Low optical losses and a huge variety of optical modes provide unique possibilities for light manipulation at the nanoscale. Recent studies showed that the magneto-optical effects in such metasurfaces are enormously enhanced.
Daria O. Ignatyeva, Denis M. Krichevsky, Vladimir I. Belotelov, François Royer, Sushree Dash, Miguel Levy   +5 more
openaire   +2 more sources

Homogenization of All-Dielectric Metasurfaces: Theory and Applications

2019 Thirteenth International Congress on Artificial Materials for Novel Wave Phenomena (Metamaterials), 2019
In this contribution, we describe a simple and powerful analytical approach to homogenize all-dielectric metasurfaces. The proposed model is based on a combination of the Mie scattering theory of the individual scatterer with a bi-dimensional homogenization approach accounting for the interaction between the electric and magnetic dipoles excited by the
Mont A., Alu A., Toscano A., Bilotti F.
openaire   +1 more source

Electrical tuning of all dielectric metasurfaces

2016 10th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics (METAMATERIALS), 2016
We demonstrate experimentally electrical tuning of dielectric metasurface, consisting of silicon disks infiltrated with nematic liquid crystals. In particular, we show that by switching a control voltage on and off we can achieve 100% amplitude modulation and approximately π phase shift.
Andrey Komar, null Zheng Fang, Isabelle Staude, Manuel Decker, Andrey Miroshnichenko, Jurgen Sautter, Igal Brener, Yuri S. Kivshar, Dragomir N. Neshev   +8 more
openaire   +1 more source

All-Dielectric Metasurface Focusing Lens

CLEO: 2014 Postdeadline Paper Digest, 2014
Dielectric metamaterial layers are lossless, and exhibit relatively high transmission efficiencies (contrary to plasmonic metasurfaces). Subwavelength dielectric lenses have been developed - demonstrating beam area contraction ratio of three, and insertion losses of 11%.
Paul R. West, James L. Stewart, Alexander V. Kildishev, Vladimir M. Shalaev, Vladimir V. Shkunov, Friedrich Strohkendl, Yuri A. Zakharenkov, Robert K. Dodds, Robert Byren   +8 more
openaire   +1 more source

Optical Nonlinearities in All-Dielectric Metasurfaces

2018 International Conference on Optical MEMS and Nanophotonics (OMN), 2018
Subwavelength all-dielectric metasurfaces are well-known to support strongly localized Mie-type modes. In this work we show our results on nonlinear optical frequency mixing enhanced by magnetic and electric dipole modes in GaAs metasurfaces. By pumping the semiconductor metasurface with two 45-fs laser pulses, we were able to generate eleven new ...
Sheng Liu, Polina P. Vabishchevich, Aleksandr Vaskin, John L. Reno, Gregory M. Peake, Gordon A. Keeler, Michael B. Sinclair, Isabelle Staude, Igal Brener   +8 more
openaire   +1 more source

Broadband transparent all-dielectric metasurfaces

Conference on Lasers and Electro-Optics, 2017
We employ the generalized Huygens principle to design and fabricate highly transparent dielectric metasurfaces for complex wavefront manipulation with 99% polarization conversion and 99% diffraction efficiencies and broadband operation at telecom wavelengths.
Sergey S. Kruk, Lei Wang, Hanzhi Tang, Ben Hopkins, Andrey Miroshnichenko, Tao Li, Ivan Kravchenko, Dragomir Neshev, Yuri Kivshar   +8 more
openaire   +1 more source

Harmonic generation in all-dielectric metasurfaces

2023
Nonlinear light generation is a key phenomenon in many optical systems. Recently, the field of nonlinear optics has moved to the miniaturization of conventional bulky components. Among all the new platforms that have been proposed, dielectric nanoscale resonators represent excellent candidates for light generation and manipulation.
Davide Rocco, Unai Arregui Leon, Olesiya Pashina, George Zograf, Sergey Makarov, Mihail Petrov, Giuseppe Della Valle, Attilio Zilli, Michele Celebrano, Marco Finazzi, Marco Gandolfi, Luca Carletti, Andrea Tognazzi, Costantino De Angelis   +13 more
openaire   +1 more source

Reflection compensation with all-dielectric metasurfaces

2017 IEEE International Conference on Microwaves, Antennas, Communications and Electronic Systems (COMCAS), 2017
We present the theoretical results on reflection compensation with all-dielectric metasurface coatings. We utilise the ability of directional scattering by all-dielectric nanostructures to engineer the antireflective system based on an array of silicon nanospheres.
Mihail Petrov, Viktoriia Babicheva, Kseniia Baryshnikova, Pavel Belov   +3 more
openaire   +1 more source