Zobrazeno 1 - 10
of 19
pro vyhledávání: '"Dimitri Oustinov"'
Autor:
S. S. Dhillon, Florent Perez, Julien Madéo, G. Karczewski, Nathan Jukam, Tomasz Wojtowicz, V. Kolkovsky, R. Rungsawang, Dimitri Oustinov, Jérôme Tignon, J. Gomez
Publikováno v:
International Conference on Infrared and Millimeter Waves/THz Electronics
International Conference on Infrared and Millimeter Waves/THz Electronics, Sep 2012, Wollongong, Australia
International Conference on Infrared and Millimeter Waves/THz Electronics, Sep 2012, Wollongong, Australia
The transient terahertz radiation emitted by a spin coherence optically generated in CdMnTe two-dimensional electron gases is directly measured in the time domain using electro-optic sampling. The spin radiation decays in a few ps at high magnetic fi
Autor:
J. Maysonnave, Sukhdeep Dhillon, Stefano Barbieri, Pascal Filloux, Julien Madéo, Carlo Sirtori, P. Cavalié, Jérôme Tignon, Xavier Marcadet, Dimitri Oustinov, R. Rungsawang, Nathan Jukam
Publikováno v:
SPIE Optics and Photonics 2011
SPIE Optics and Photonics 2011, 2011, San Diego, United States
SPIE Optics and Photonics 2011, 2011, San Diego, United States
Laser action normally is initiated by the amplification of spontaneous emission. As spontaneous emission is a random process, the carrier phase of a laser is different each time a laser is turned on. As a consequence, it is not possible to measure th
Autor:
Julien Madéo, Nathan Jukam, Pascal Filloux, Stefano Barbieri, Jérôme Tignon, J. Maysonnave, R. Rungsawang, Xavier Marcadet, P. Cavalié, Sukhdeep Dhillon, Carlo Sirtori, Dimitri Oustinov
Publikováno v:
International Workshop on Optical Terahertz Science and Technology
International Workshop on Optical Terahertz Science and Technology, 2011, Santa Barbara, United States
Conference on Lasers and Electro-Optics
Conference on Lasers and Electro-Optics, 2011, Baltimore, United States
Scopus-Elsevier
International Workshop on Optical Terahertz Science and Technology, 2011, Santa Barbara, United States
Conference on Lasers and Electro-Optics
Conference on Lasers and Electro-Optics, 2011, Baltimore, United States
Scopus-Elsevier
The QCL carrier phase is set by coherent injection seeding with a THz pulse. This enables the phase-resolved laser emission to be measured in the time-domain and the QCL to be used directly for time-domain-spectroscopy.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c88936d936317de8b94f2e8968465882
https://hal.archives-ouvertes.fr/hal-00659833
https://hal.archives-ouvertes.fr/hal-00659833
Autor:
Joshua R. Freeman, Julien Madéo, Anthony Brewer, Sukhdeep Dhillon, Owen P. Marshall, Nathan Jukam, Dimitri Oustinov, Jerome Tignon, Harvey E. Beere, David A. Ritchie, Jisoon Ihm, Hyeonsik Cheong
Publikováno v:
AIP Conference Proceedings.
We describe a heterogeneous THz quantum cascade laser that is composed of two different active region designs. This device emits simultaneously at around 2.5 THz and 2.9 THz with a certain frequency tunability by applied current. We also investigate
Autor:
Julien Madéo, Jérôme Tignon, Alexander Giles Davies, Nathan Jukam, Dimitri Oustinov, Edmund H. Linfield, Sukhdeep Dhillon, R. Rungsawang, Raffaele Colombelli, M. Salih, Paul Dean, Suraj P. Khanna
Publikováno v:
35th International Conference on Infrared, Millimeter and Terahertz Waves, Rome, Italy, 5–10 Septemb.
Gain and losses in a LO-phonon THz QCL are studied using TDS. At threshold the gain clamps at 25cm−1 and the gain FWHM is 0.6THz. At low biases, absorption features are observed below and above the laser frequency. They are shown to originate from
Autor:
Carlo Sirtori, Julien Madéo, P. Filloux, Jérôme Tignon, Stefano Barbieri, Nathan Jukam, Dimitri Oustinov, Sukhdeep Dhillon, R. Rungsawang, S. Sawallich, Xavier Marcadet
Publikováno v:
35th International Conference on Infrared, Millimeter, and Terahertz Waves.
Integrated THz pulse generation and amplification in THz QCLs is demonstrated. Intracavity narrowband THz pulses are generated at 2.1THz by exciting the facet of a THz quantum cascade laser with a resonant interband-intersubband transition and detect
Autor:
R. Rungsawang, Jérôme Tignon, Carlo Sirtori, Nathan Jukam, Suraj P. Khanna, Alexander Giles Davies, Julien Madéo, Edmund H. Linfield, Stefano Barbieri, C. Manquest, Sukhdeep Dhillon, Dimitri Oustinov
Publikováno v:
35th International Conference on Infrared, Millimeter, and Terahertz Waves.
The population inversion of a terahertz quantum cascade laser is placed out of equilibrium using an integrated Auston switch. As a result, the dynamic gain of the laser is no longer clamped at threshold by the mirror losses, and large amplification o
Autor:
Stefano Barbieri, Jérôme Tignon, Julien Madéo, R. Rungsawang, S. Sawallich, Dimitri Oustinov, Sukhdeep Dhillon, Pascal Filloux, Nathan Jukam, Carlo Sirtori, Xavier Marcadet
Publikováno v:
GDR-E THz 2010
GDR-E THz 2010, 2010, Paris, France
BASE-Bielefeld Academic Search Engine
Photonics West 2011
Photonics West 2011, 2011, San Francisco, United States
Proc. SPIE 7945 : Quantum Sensing and Nanophotonic Devices VIII
Photonics West 2011, 2011, San Francisco, United States. pp.79450B
International Conference on Physics of Semiconductor
International Conference on Physics of Semiconductor, Jul 2010, Seoul, South Korea
GDR-E THz 2010, 2010, Paris, France
BASE-Bielefeld Academic Search Engine
Photonics West 2011
Photonics West 2011, 2011, San Francisco, United States
Proc. SPIE 7945 : Quantum Sensing and Nanophotonic Devices VIII
Photonics West 2011, 2011, San Francisco, United States. pp.79450B
International Conference on Physics of Semiconductor
International Conference on Physics of Semiconductor, Jul 2010, Seoul, South Korea
Integrated terahertz (THz) pulse generation and amplification in a THz quantum cascade laser (QCL) is demonstrated. Intra-cavity THz pulses are generated by exciting the facet of the quantum cascade laser with an ultrafast Ti:Sapphire laser (~100fs)
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::391407fc6333d50b6ad845f904b6ce0b
https://hal.archives-ouvertes.fr/hal-00659838
https://hal.archives-ouvertes.fr/hal-00659838
Autor:
Jérôme Tignon, Julien Madéo, Nathan Jukam, M. Rosticher, R. Rungsawang, Dimitri Oustinov, Sukhdeep Dhillon
Publikováno v:
Electronics Letters
Electronics Letters, IET, 2010, 46, pp.611
Electronics Letters, 2010, 46, pp.611
Electronics Letters, IET, 2010, 46, pp.611
Electronics Letters, 2010, 46, pp.611
Frequency tunable terahertz (THz) interdigitated photoconductive antennas (PCAs) are realised by adjusting electrode spacing. An interdigitated geometry allows fabrication of PCAs with small gaps and large surface area for optical excitation. The pul
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d75c4b88cbcbcb772a84dcfdd152426a
https://hal.archives-ouvertes.fr/hal-00519575
https://hal.archives-ouvertes.fr/hal-00519575
Autor:
Xavier Marcadet, R. Rungsawang, Julien Madéo, Sukhdeep Dhillon, Jérôme Tignon, Pascal Filloux, Carlo Sirtori, Nathan Jukam, Dimitri Oustinov, Stefano Barbieri
Publikováno v:
Nature Communications
Nature Communications, 2010, 1, pp.1. ⟨10.1038/ncomms1068⟩
Nature Communications, Nature Publishing Group, 2010, 1, pp.1. ⟨10.1038/ncomms1068⟩
Nature Communications, 2010, 1, pp.1. ⟨10.1038/ncomms1068⟩
Nature Communications, Nature Publishing Group, 2010, 1, pp.1. ⟨10.1038/ncomms1068⟩
The amplification of spontaneous emission is used to initiate laser action. As the phase of spontaneous emission is random, the phase of the coherent laser emission (the carrier phase) will also be random each time laser action begins. This prevents
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ef78d9c3afaaa24bf949e206c91fb1f2
https://hal.science/hal-00519402/file/Oustinov_Nature_Communications.pdf
https://hal.science/hal-00519402/file/Oustinov_Nature_Communications.pdf