Zobrazeno 1 - 10
of 171
pro vyhledávání: '"Michel Calligaro"'
Autor:
F.-J. Vermersch, V. Ligeret, Olivier Parillaud, Michel Krakowski, Michel Lecomte, Michel Calligaro, Shailendra Bansropun
Publikováno v:
International Conference on Space Optics — ICSO 2006.
Atomic clocks will be used in the future European positioning system Galileo. Among them, the optically pumped clocks provide a better alternative with comparable accuracy for a more compact system. For these systems, diode lasers emitting at 852nm a
Autor:
Daniil I. Nikitichev, Michel Calligaro, Igor Krestnikov, Nicolas Michel, M. Ruiz, Daniil A. Livshits, Edik U. Rafailov, Michel Krakowski, Maria Ana Cataluna, Ying Ding
Publikováno v:
Applied Physics B
We report picosecond pulse generation with high peak power in the range of 3.6 W from monolithic passively mode-locked tapered quantum-dot laser diodes, exhibiting low divergence and good beam quality. These results were achieved using a gain-guided
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
Autor:
J. Bébé Manga Lobé, Michel Calligaro, Michael Tran, M. Carbonnelle, A. Larrue, Marco Lamponi, Olivier Parillaud, E. Vinet, C. Cayron, Nicolas Michel, Y. Robert, Michel Garcia, N. von Bandel, Michel Krakowski, V. Ligeret, Roberto Mostallino, Michel Lecomte, O. Drisse
Publikováno v:
Quantum Sensing and Nanophotonic Devices XII.
Laser diodes emitting at different wavelengths can address various applications. 852nm or 894nm single frequency low linewidth laser diodes are needed for Cs pumping for realization of atomic clocks. 780nm high power low linewidth laser diodes and am
Autor:
S. Bull, S.C. Auzanneau, Michel Lecomte, O. Parillaud, J. Wykes, Slawomir Sujecki, Michel Krakowski, Eric C. Larkins, A. V. Andrianov, J.J. Lim, Michel Calligaro
Publikováno v:
IEE Proceedings - Optoelectronics. 153:2-7
Using a quantitatively calibrated imaging system and specially fabricated tapered lasers with windowed n-contacts, the authors image the spontaneous emission distribution inside two different laser cavities as a function of injection current. In the
Autor:
M. Giovannini, E. Boer-Duchemin, Clément Faugeras, J.-Y. Bengloan, Olivier Parillaud, H. Page, Jérôme Faist, Carlo Sirtori, Sébastien Forget, Michel Calligaro
Publikováno v:
IEEE Journal of Quantum Electronics. 41:1430-1438
We present two different techniques for processing InP-based /spl lambda/=9 /spl mu/m quantum cascade lasers which improve the thermal dissipation in the device. The first process is based on hydrogen implantation creating an insulating layer to inje
Autor:
Gadi Eisenstein, R. Schwertberger, Vissarion Mikhelashvili, R. Alizon, Michel Krakowski, Michel Calligaro, Andre Somers, A. Bilenca, Shailendra Bansropun, Johann Peter Reithmaier, Hanan Dery, Alfred Forchel, D. Hadass
Publikováno v:
IEEE Journal of Selected Topics in Quantum Electronics. 11:1015-1026
We present a theoretical model for gain and noise saturation in quantum dash (QDash) semiconductor optical amplifiers. The model is based on the density matrix formalism and addresses static saturation spectra. The calculations are confirmed by a ser
Autor:
Alfred Forchel, S. Deubert, Johann Peter Reithmaier, Olivier Parillaud, D. Rodriguez, Ignacio Esquivias, Michel Calligaro, Michel Krakowski
Publikováno v:
IEEE Journal of Quantum Electronics. 41:117-126
An experimental comparative study of the gain, index variation, and linewidth enhancement factor in 980-nm quantum-well (QW) and quantum-dot (QD) lasers structures, designed for high power applications, is presented. The gain spectra of the QW lasers
Publikováno v:
Optics & Laser Technology. 36:669-676
AlGaAs-based quantum well laser structures with third-order waveguide mode emission at 775 nm are a promising route toward compact twin-photon sources at 1.55 μm based on the principle of modal phase matching between the pumping frequency and fundam
Autor:
Vincent Berger, V. Ortiz, Michel Calligaro, Alfredo De Rossi, Julien Nagle, Sara Ducci, Borge Vinter
Publikováno v:
Semiconductor Science and Technology. 19:L99-L102
A third-order-mode emitting laser diode, which is also intended for use with a phase-matched waveguide, is demonstrated and analysed. The AlGaAs/GaAs heterostructure is engineered to down-convert the laser photons into photon pairs through a parametr