| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Lysevych, Mykhaylo
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (13/13 displayed)
- 2023Core-shell GaN/AlGaN nanowires grown by selective area epitaxycitations
- 2022Nonpolar Al xGa1−xN/Al yGa1−yN multiple quantum wells on GaN nanowire for UV emissioncitations
- 2022Far-Field Polarization Engineering from Nonlinear Nanoresonatorscitations
- 2022Selective Area Growth of GaN Nanowirecitations
- 2021Narrow-Bandgap InGaAsP Solar Cell with TiO2 Carrier-Selective Contactcitations
- 2020Forward and Backward Switching of Nonlinear Unidirectional Emission from GaAs Nanoantennascitations
- 2019Second-harmonic generation in (111) gallium arsenide nanoantennas
- 2019 Ultrathin Ta 2 O 5 electron-selective contacts for high efficiency InP solar cells citations
- 2019InGaAsP as a Promising Narrow Band Gap Semiconductor for Photoelectrochemical Water Splittingcitations
- 2019Ultrathin Ta2O5 electron-selective contacts for high efficiency InP solar cellscitations
- 2018Indium phosphide based solar cell using ultra-thin ZnO as an electron selective layercitations
- 2017Improved photoelectrochemical performance of GaN nanopillar photoanodescitations
- 2017Void evolution and porosity under arsenic ion irradiation in GaAs1-xSbx alloyscitations
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article
Forward and Backward Switching of Nonlinear Unidirectional Emission from GaAs Nanoantennas
Abstract
<p>High-index III-V semiconductor nanoantennas have gained great attention for enhanced nonlinear light-matter interactions, in the past few years. However, the complexity of nonlinear emission profiles imposes severe constraints on practical applications, such as in optical communications and integrated optoelectronic devices. These complexities include the lack of unidirectional nonlinear emission and the severe challenges in switching between forward and backward emissions, due to the structure of the susceptibility tensor of the III-V nanoantennas. Here, we propose a solution to both issues via engineering the nonlinear tensor of the nanoantennas. The special nonlinear tensorial properties of zinc-blende material can be used to engineer the nonlinear characteristics via growing the nanoantennas along different crystalline orientations. Based on the nonlinear multipolar effect, we have designed and fabricated (110)-grown GaAs nanoantennas, with engineered tensorial properties, embedded in a transparent low-index material. Our technique provides an approach not only for unidirectional second-harmonic generation (SHG) forward or backward emission but also for switching from one to another. Importantly, switching the SHG emission directionality is obtained only by rotating the polarization of the incident light, without the need for physical variation of the antennas or the environment. This characteristic is an advantage, as compared to other nonlinear nanoantennas, including (100)- and (111)-grown III-V counterparts or silicon and germanium nanoantennas. Indeed, (110)-GaAs nanoantennas allow for engineering the nonlinear nanophotonic systems including nonlinear "Huygens metasurfaces" and offer exciting opportunities for various nonlinear nanophotonics technologies, such as nanoscale light routing and light sources, as well as multifunctional flat optical elements.</p>