Zobrazeno 1 - 10 of 13 pro vyhledávání: '"Etienne Rodriguez"'
3
Engineering of patch antenna resonator losses through a metamaterial approach for unipolar quantum detectors
Autor: Etienne Rodriguez, Thomas Bonazzi, Hamza Dely, Marta Mastrangelo, Isabelle Sagnes, Angela Vasanelli, Yanko Todorov, Carlo Sirtori
Publikováno v: Optica High-brightness Sources and Light-driven Interactions Congress 2022.
Patch antenna photodetectors permit great enhancements to quantum cascade photodetectors’ performances. Using the coupled mode theory, we present a quantitative study of the energy distribution and dissipation in such metamaterials to optimize them
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d6698f07313b0c91e8cbfd9e6c013800
https://doi.org/10.1364/mics.2022.mf5c.5
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4
Gb/s LWIR FSO Transmission at 9.6 µm using a Directly-Modulated Quantum Cascade Laser and an Uncooled Quantum Cascade Detector
Autor: Xiaodan Pang, Hamza Dely, Richard Schatz, Djamal Gacemi, Mahdieh Joharifar, Toms Salgals, Aleksejs Udalcovs, Yan-Ting Sun, Yuchuan Fan, Lu Zhang, Etienne Rodriguez, Sandis Spolitis, Vjaceslavs Bobrovs, Xianbin Yu, Sebastian Lourdudoss, Sergei Popov, Oskars Ozolins, Angela Vasanelli, Carlo Sirtori
Publikováno v: Optical Fiber Communication Conference (OFC) 2022.
Record 11 Gb/s LWIR FSO transmission is demonstrated with a 9.6-µm directly-modulated QCL and a fully passive QCD without cooling, surpassing the previous bitrate record of DM-QCL-based FSO in this spectral window by 4 times.
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c84fa8ce8a32878706401d000ad69abc
https://doi.org/10.1364/ofc.2022.th4b.5
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5
High bitrate data transmission in the 8-14 µm atmospheric window using an external Stark-effect modulator with digital equalization
Autor: Hamza Dely, Mahdieh Joharifar, Xiaodan Pang, Djamal Gacemi, Toms Salgals, Richard Schatz, Yan-Ting Sun, Thomas Bonazzi, Etienne Rodriguez, Yanko Todorov, Angela Vasanelli, Aleksejs Udalcovs, Sandis Spolitis, Vjaceslavs Bobrovs, Oskars Ozolins, Sergei Popov, Carlo Sirtori
Publikováno v: Optics Express. 31:7259
High bitrate mid-infrared links using simple (NRZ) and multi-level (PAM-4) data coding schemes have been realized in the 8 µm to 14 µm atmospheric transparency window. The free space optics system is composed of unipolar quantum optoelectronic devi
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::6c87c49ca6ec4a92024cd591ce67f129
https://doi.org/10.1364/oe.474209
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6
Si substrate based GaAs/AlGaAs quantum well infrared photodetector with Ge buffer
Autor: Soon Fatt Yoon, Etienne Rodriguez, Kian Hua Tan, Wang Qijie, Wang Chongwu, Carlo Sirtori, Satrio Wicaksono, Kwang Hong Lee
Publikováno v: 2021 IEEE Photonics Society Summer Topicals Meeting Series (SUM).
Ge buffer layer was introduced between the AlGaAs/GaAs quantum well infrared photodetectors active region and Si substrate, reducing threading dislocation density. The QWIPs on both Si and GaAs substrate exhibit similar responsivity, and detectivity.
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::41e3992e30b9c7ab2e2fc6f26f1069b5
https://doi.org/10.1109/sum48717.2021.9505769
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7
Tunability of the free-spectral range by microwave injection into a mid-infrared quantum cascade laser
Autor: Etienne Rodriguez, Djamal Gacemi, Yanko Todorov, Qi Jie Wang, Mathieu Jeannin, Zahra Asghari, Carlo Sirtori, Angela Vasanelli, Alireza Mottaghizadeh
Publikováno v: Laser and Photonics Reviews
Laser and Photonics Reviews, Wiley-VCH Verlag, 2020, 14 (5), pp.1900389. ⟨10.1002/lpor.201900389⟩
Laser & Photonics Reviews
The free-spectral range (FSR) of quantum cascade lasers (QCLs) emitting at 4.7 µm can be tuned through direct microwave modulation. The intrinsic short carrier lifetime of inter-subband transitions, along with impedance matched electrical packaging,
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::18749ccd6be6ffcf0999af487fd7ef7c
https://hdl.handle.net/10356/147858
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9
Room-Temperature, Wide-Band, Quantum Well Infrared Photodetector for Microwave Optical Links at 4.9 μm Wavelength
Autor: Etienne Rodriguez, Jérôme Faist, Carlo Sirtori, Alireza Mottaghizadeh, Angela Vasanelli, Daniele Palaferri, Yanko Todorov, Qi Jie Wang, Djamal Gacemi, Azzurra Bigioli, Zahra Asghari, Mathieu Jeannin, Mattias Beck
Publikováno v: ACS photonics
ACS photonics, American Chemical Society, 2018, 5 (9), pp.3689-3694. ⟨10.1021/acsphotonics.8b00704⟩
High-speed, room-temperature, quantum well infrared photodetectors (QWIPs) at λ ∼ 4.9 μm have been realized in a strain compensated In0.1Ga0.9As/Al0.4Ga0.6As heterostructure grown on a GaAs substrate. The high-speed properties at room temperature
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ee14ddab6eeac0f3891104ca967d5051
https://doi.org/10.1021/acsphotonics.8b00704
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10
High speed quantum well infrared heterodyne receivers at 4.9μm
Autor: A. Bigioli, G. Vallet, Carlo Sirtori, Etienne Rodriguez, Djamal Gacemi, Yanko Todorov, Angela Vasanelli
Publikováno v: 2019 44th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz)
2019 44th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz), Sep 2019, Paris, France. pp.1-2, ⟨10.1109/IRMMW-THz.2019.8873742⟩
We have realized high-speed quantum well infrared photodetectors (QWIPs) for the detection of coherent radiation at 4.9 μm wavelength. Our devices have a detectivity of 4 x 10-10 cm Hz1/2 W-1 at 77 K and a bandwidth higher than 20 GHz.
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::25df7688de22335446d0d797979adf69
https://doi.org/10.1109/irmmw-thz.2019.8873742
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