Zobrazeno 1 - 10
of 139
pro vyhledávání: '"Xavier Marcadet"'
Publikováno v:
Coherent Laser Beam Combining
Autor:
Sergej Markmann, Ulrich Kunze, Negar Hekmat, Xavier Marcadet, Nadezhda Kukharchyk, Claudia Bock, Jérôme Tignon, Arne Ludwig, Nathan Jukam, Hanond Nong, Andreas D. Wieck, Sven Scholz, Sukhdeep Dhillon, Shovon Pal
Publikováno v:
Applied Physics Letters
Applied Physics Letters, 2015, 107 (11), ⟨10.1063/1.4930993⟩
Applied Physics Letters, American Institute of Physics, 2015, 107 (11), ⟨10.1063/1.4930993⟩
Applied Physics Letters, 2015, 107 (11), ⟨10.1063/1.4930993⟩
Applied Physics Letters, American Institute of Physics, 2015, 107 (11), ⟨10.1063/1.4930993⟩
We demonstrate by injection seeding that the spectral emission of a terahertz (THz) quantum cascade laser (QCL) can be modified with broad-band THz pulses whose bandwidths are greater than the QCL bandwidth. Two broad-band THz pulses delayed in time
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::379f128f333cc8c47e8b80139633d67f
https://hal.science/hal-01334210
https://hal.science/hal-01334210
Autor:
Nadezhda Kukharchyk, Shovon Pal, Ulrich Kunze, Sergej Markmann, Negar Hekmat, Arne Ludwig, Xavier Marcadet, Claudia Bock, Jérôme Tignon, Hanond Nong, Sven Scholz, Sukhdeep Dhillon, Nathan Jukam, Andreas D. Wieck
Publikováno v:
2015 40th International Conference on Infrared, Millimeter, and Terahertz waves (IRMMW-THz).
Double-pulse injection seeding is used to modify the spectral emission of a terahertz quantum cascade laser (THz QCL). Two broad-band THz pulses delayed in time imprint a modulation on the single THz pulse spectrum. The resulting seed enables modific
Publikováno v:
Photoniques. :54-57
Les lasers a cascade quantique ont fait, depuis leur premiere demonstration en 1994, des progres considerables, notamment dans le moyen infrarouge (bande allant de 3 a 12 μm). Ils peuvent maintenant etre consideres comme la solution pour les applica
Autor:
Philippe Bois, Alexandru Nedelcu, Alfredo De Rossi, Vincent Guériaux, Toufiq Bria, Arnaud Berurier, Xavier Marcadet
Publikováno v:
Infrared Physics & Technology. 54:182-188
Large format detectors in the long wavelength region of the thermal infrared (TIR) spectrum ( λ ∼ 11–15 μm) with very high radiometric and imaging performances are of increasing scientific and operational interest for, e.g. meteorology and atmo
Autor:
Virginie Trinité, Xavier Marcadet, Agnes Coulibaly, Vincent Guériaux, Lydie Dua, Alexandru Nedelcu, Nadia Brière de l’Isle
Publikováno v:
Infrared Physics & Technology. 54:177-181
One of the key features of quantum well infrared photodetectors is the narrow absorption band. This inherently narrow spectral response has been proven to be an excellent asset to enhance the contrast in thermal images. Yet, some applications, as the
Autor:
Odile Huet, N. Brière de l'Isle, Eric Costard, J. A. Robo, Xavier Marcadet, H. Facoetti, J. P. Truffer, Lydie Dua, P. Bois, Alexandru Nedelcu
Publikováno v:
Infrared Physics & Technology. 52:353-360
Since 2002, the THALES Group has been manufacturing sensitive arrays using QWIP technology based on GaAs and related III–V compounds, at the Alcatel-Thales-III-V Lab (formerly part of THALES Research and Technology Laboratory). In the past research
Autor:
Alexandre Bazin, Arnaud Berurier, Xavier Marcadet, Lydie Dua, Alexandru Nedelcu, Philippe Bois, Eric Costard, Vincent Guériaux
Publikováno v:
Infrared Physics & Technology. 52:412-418
A 30 months European Space Agency project started in March 2008, whose overall purpose is to expand and assess the performance of broadband (11–15 μm) quantum detectors for spectro-imaging applications: Dispersive Spectrometers and Fourier Transfo
Autor:
Mathieu Carras, Alexandru Nedelcu, Xavier Marcadet, Odile Huet, Vincent Guériaux, Philippe Bois
Publikováno v:
Infrared Physics & Technology. 52:235-240
We report two approaches using Quantum Well Infrared Photodetectors for detection in the [3–4.2 μm] atmospheric window. Taking advantage of the large band gap discontinuity we demonstrated a strained AlInAs/InGaAs heterostructure on InP. The optic
Autor:
W. Schrenk, Michel Calligaro, J. Darmo, C. Deutsch, Gottfried Strasser, Alexander Benz, Xavier Marcadet, J. Kroll, Harvey E. Beere, David A. Ritchie, W. Parz, Aaron Maxwell Andrews, Karl Unterrainer, Thomas Müller, M. Martl, Damien P. Kelly, Gernot Fasching, Carlo Sirtori, S. S. Dhillon
Publikováno v:
IEEE Journal of Selected Topics in Quantum Electronics. 14:307-314
In this review, we report on the study of terahertz (THz) intersubband (ISB) transitions and on the optical devices based on them. We use time-resolved THz spectroscopy to examine ISB optical transitions in semiconductor quantum wells and quantum cas