Zobrazeno 1 - 10
of 108
pro vyhledávání: '"Gacemi, Djamal"'
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:
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:
Jeannin, Mathieu, Gacemi, Djamal, Vasanelli, Angela, Li, Lianhe, Davies, Alexander Giles, Linfield, Edmund, Biasiol, Giorgio, Sirtori, Carlo, Todorov, Yanko
We provide an analysis of the electromagnetic modes of three-dimensional metamaterial resonators in the THz frequency range. The fundamental resonance of the structures is fully described by an analytical circuit model, which not only reproduces the
Externí odkaz:
http://arxiv.org/abs/2002.09746
Autor:
Jeannin, Mathieu, Nesurini, Giacomo Mariotti, Suffit, Stéphan, Gacemi, Djamal, Vasanelli, Angela, Li, Lianhe, Davies, Alexander Giles, Linfield, Edmund, Sirtori, Carlo, Todorov, Yanko
The ultra-strong light-matter coupling regime has been demonstrated in a novel three-dimensional inductor-capacitor (LC) circuit resonator, embedding a semiconductor two-dimensional electron gas in the capacitive part. The fundamental resonance of th
Externí odkaz:
http://arxiv.org/abs/1904.06670
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Autor:
Palaferri, Daniele, Todorov, Yanko, Bigioli, Azzurra, Mottaghizadeh, Alireza, Gacemi, Djamal, Calabrese, Allegra, Vasanelli, Angela, Li, Lianhe, Davies, A. Giles, Linfield, Edmund H., Kapsalidis, Filippos, Beck, Mattias, Faist, Jérôme, Sirtori, Carlo
Room temperature operation is mandatory for any optoelectronics technology which aims to provide low-cost compact systems for widespread applications. In recent years, an important technological effort in this direction has been made in bolometric de
Externí odkaz:
http://arxiv.org/abs/1709.01898
Autor:
Dely, Hamza, Joharifar, Mahdieh, Durupt, Laureline, Ostrovskis, Armands, Schatz, Richard, Bonazzi, Thomas, Maisons, Gregory, Gacemi, Djamal, Salgals, Toms, Zhang, Lu, Spolitis, Sandis, Sun, Yan-Ting, Bobrovs, Vjačeslavs, Yu, Xianbin, Sagnes, Isabelle, Pantzas, Konstantinos, Vasanelli, Angela, Ozolins, Oskars, Pang, Xiaodan, Sirtori, Carlo
Publikováno v:
Nature Communications; 9/14/2024, Vol. 15 Issue 1, p1-11, 11p