Zobrazeno 1 - 10
of 195
pro vyhledávání: '"Vasanelli Angela"'
Autor:
Haky Andrew, Vasanelli Angela, Pantzas Konstantinos, Todorov Yanko, Beaudoin Grégoire, Patriarche Gilles, Sagnes Isabelle, Sirtori Carlo
Publikováno v:
Nanophotonics, Vol 13, Iss 10, Pp 1851-1857 (2024)
The volume plasmon modes of a confined electron gas are engineered in a step-like semiconductor potential, which induces the formation of adjacent regions of different charge density. Each region supports spatially localized collective modes. Adjacen
Externí odkaz:
https://doaj.org/article/dd28191b62bf4316933acc582b532ea9
Autor:
Saemian Mohammadreza, Del Balzo Livia, Gacemi Djamal, Todorov Yanko, Rodriguez Etienne, Lopez Olivier, Darquié Benoit, Li Lianhe, Davies Alexander Giles, Linfield Edmund, Vasanelli Angela, Sirtori Carlo
Publikováno v:
Nanophotonics, Vol 13, Iss 10, Pp 1765-1772 (2024)
We report room temperature heterodyne detection of a quantum cascade laser beaten with a local oscillator on a unipolar quantum photodetector in two different atmospheric windows, at 4.8 µm and 9 µm. A noise equivalent power of few pW is measured b
Externí odkaz:
https://doaj.org/article/bc2a7b94eb0c459cadd9c112d83f8d57
Autor:
Vasanelli Angela, Todorov Yanko, Dailly Baptiste, Cosme Sébastien, Gacemi Djamal, Haky Andrew, Sagnes Isabelle, Sirtori Carlo
Publikováno v:
Nanophotonics, Vol 10, Iss 1, Pp 607-615 (2020)
Plasmons in heavily doped semiconductor layers are optically active excitations with sharp resonances in the 5–15 μm wavelength region set by the doping level and the effective mass. Here, we demonstrate that volume plasmons can form in doped laye
Externí odkaz:
https://doaj.org/article/3855564c3445434ba5c8898d91311714
Autor:
Calabrese Allegra, Gacemi Djamal, Jeannin Mathieu, Suffit Stéphan, Vasanelli Angela, Sirtori Carlo, Todorov Yanko
Publikováno v:
Nanophotonics, Vol 8, Iss 12, Pp 2269-2277 (2019)
Thanks to their large sensitivity to electromagnetic fields, microelectromechanical systems are becoming attractive for applications in the THz band (0.1–10 THz). However, up to date all THz electromechanical systems couple electromagnetic fields t
Externí odkaz:
https://doaj.org/article/23d2d62c6b52442b9354199dfa81359d
The optical response of a matter excitation embedded in nanophotonic devices is commonly described by the Drude-Lorentz model. Here, we demonstrate that this widely used approach fails in the case where quantum-confined plasmons of a two-dimensional
Externí odkaz:
http://arxiv.org/abs/2301.08935
Autor:
Dely, Hamza, Bonazzi, Thomas, Spitz, Olivier, Rodriguez, Etienne, Gacemi, Djamal, Todorov, Yanko, Pantzas, Konstantinos, Beaudoin, Grégoire, Sagnes, Isabelle, Li, Lianhe, Davies, Alexander, Linfield, Edmund, Grillot, Frédéric, Vasanelli, Angela, Sirtori, Carlo
The realization of high-frequency unipolar quantum optoelectronic devices enables the demonstration of high bitrate free space data transmission in the second atmospheric window. Data-bits are written onto the laser emission using a large bandwidth a
Externí odkaz:
http://arxiv.org/abs/2110.06572
Autor:
Jeannin, Mathieu, Bonazzi, Thomas, Gacemi, Djamal, Vasanelli, Angela, Suffit, Stéphan, Li, Lianhe, Davies, Alexander Giles, Linfield, Edmund, Sirtori, Carlo, Todorov, Yanko
Publikováno v:
Applied Physics Letters 117 (2020) 251102
We demonstrate a high temperature performance quantum detector of Terahertz (THz) radiation based on three-dimensional metamaterial. The metamaterial unit cell consists of an inductor-capacitor (LC) resonator laterally coupled with antenna elements.
Externí odkaz:
http://arxiv.org/abs/2012.11681
Autor:
Vasanelli, Angela, Todorov, Yanko, Dailly, Baptiste, Cosme, Sébastien, Gacemi, Djamal, Haky, Andrew, Sagnes, Isabelle, Sirtori, Carlo
Plasmons in heavily doped semiconductor layers are optically active excitations with sharp resonances in the 5-15 um wavelength region set by the doping level and the effective mass. Here we demonstrate that volume plasmons can form in doped layers o
Externí odkaz:
http://arxiv.org/abs/2007.12403
Autor:
Bigioli, Azzurra, Armaroli, Giovanni, Vasanelli, Angela, Gacemi, Djamal, Todorov, Yanko, Palaferri, Daniele, Li, Lianhe, Davies, Alexander Giles, Linfield, Edmund, Sirtori, Carlo
Quantum cascade detectors (QCD) are unipolar infrared devices where the transport of the photo excited carriers takes place through confined electronic states, without an applied bias. In this photovoltaic mode, the detector's noise is not dominated
Externí odkaz:
http://arxiv.org/abs/2003.10752
Autor:
Vasanelli, Angela, Huppert, Simon, Haky, Andrew, Laurent, Thibault, Todorov, Yanko, Sirtori, Carlo
Publikováno v:
Phys. Rev. Lett. 125, 187401 (2020)
We investigate the frontier between classical and quantum plasmonics in highly doped semiconductor layers. The choice of a semiconductor platform instead of metals for our study permits an accurate description of the quantum nature of the electrons c
Externí odkaz:
http://arxiv.org/abs/2003.01543