| 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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Caglayan, Humeyra
Tampere University
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (19/19 displayed)
- 2024Ultrafast optical properties of stoichiometric and non-stoichiometric refractory metal nitrides TiNx, ZrNx, and HfNxcitations
- 2023Deterministic Polymorphic Engineering of MoTe2 for Photonic and Optoelectronic Applicationscitations
- 2023Deterministic Polymorphic Engineering of MoTe2 for Photonic and Optoelectronic Applicationscitations
- 2023New Horizons in Near-Zero Refractive Index Photonics and Hyperbolic Metamaterialscitations
- 2022Self-Rolling SiO2/Au Based Epsilon-Near-Zero Metamaterialscitations
- 2022Mechanism of emitters coupled with a polymer-based hyperbolic metamaterialcitations
- 2021Loss compensated extraordinary transmission in hybridized plasmonic nanocavitiescitations
- 2020Hot electron dynamics in ultrafast multilayer epsilon-near-zero metamaterialscitations
- 2020Loss compensated extraordinary transmission in hybridized plasmonic nanocavitiescitations
- 2018Highly-Sensitive Refractive Index Sensing by Near-infrared Metatronic Nanocircuitscitations
- 2018Enhanced tunability of metasurfaces with graphene
- 2018Electrically switchable metadevices via graphenecitations
- 2018Electrically switchable metadevices via graphene.
- 2014Solution-Processed Phase-Change VO2 Metamaterials from Colloidal Vanadium Oxide (VOx) Nanocrystalscitations
- 2013Chemically tailored dielectric-to-metal transition for the design of metamaterials from nanoimprinted colloidal nanocrystalscitations
- 2013Shape-dependent plasmonic response and directed self-assembly in a new semiconductor building block, indium-doped cadmium oxide (ICO)citations
- 2012Composite chiral metamaterials with negative refractive index and high values of the figure of meritcitations
- 2008Experimental observation of cavity formation in composite metamaterialscitations
- 2006Designing materials with desired electromagnetic propertiescitations
Places of action
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article
Hot electron dynamics in ultrafast multilayer epsilon-near-zero metamaterials
Abstract
Realizing remarkable tunability in optical properties without sacrificing speed is critical to obtain all optical ultrafast devices. In this work, we investigate the ultrafast temporal behavior of optically tunable epsilon-near-zero (ENZ) metamaterials, operating in the visible spectral range. To perform this the ultrafast dynamics of the hot electrons is acquired by femtosecond pump-probe spectroscopy and studied based on a two-temperature model (2TM). We show that pumping with femtosecond pulses changes the effective permittivity of the metamaterial by more than 400%. This significant modulation is more pronounced in the ENZ region and we confirm this by the 2TM. The realized ultrafast modulation in effective permittivity, along with the ultrashort relaxation time of 3.3 ps, opens another avenue towards ultrafast photonic applications. ; Peer reviewed