Publications

• Article dans une revue

Indirect interband transition in hexagonal GaN

O Lancry, J.-L Farvacque, E Pichonat, Christophe Gaquière

In this paper, we report on optical investigations with Raman experiment to underline a new Ultra Violet (UV) luminescence band in hexagonal Gallium Nitride (GaN) at 4.56 eV. GaN is a direct band gap semiconductor, the photoluminescence peak corresponding to the energy gap at 3.43 eV dominates the…

Journal of Physics D: Applied Physics, 2011, 44 (7), pp.75105. ⟨10.1088/0022-3727/44/7/075105⟩. ⟨hal-00594972⟩

• Article dans une revue

Tunable dual-mode DFB laser for millimetre-wave signal generation

S. Ginestar, F. van Dijk, A. Accard, F. Poingt, F. Pommereau, L. Le Gouezigou, O. Le Gouezigou, F. Lelarge, B. Rousseau, J. Landreau, Jean-Pierre Vilcot, G.-H. Duan

Highly compact dual-mode semiconductor laser sources get more and more attention in different application fields such as radar, security and personal communication systems. When the two generated wavelengths are detected within the same photodetector, an electrical signal which frequency is the…

European Physical Journal: Applied Physics, 2011, 53 (3), pp.33609-1-5. ⟨10.1051/epjap/2011100065⟩. ⟨hal-00672783⟩

• Article dans une revue

Novel approach of UWB multi-band system based on orthogonal function for transports applications

F. Elbahhar, A. Lamari, Atika Rivenq, Jean-Michel Rouvaen, Marc Heddebaut, Tariq Boukour, Laila Sakkila

Ultra Wide Band (UWB) is based on the transmission of very short pulses with relatively low energy. This technology may see increased use in the wireless communications and sensing application. Having the available bandwidth of 7.5 GHz and the minimum signal bandwidth of 500 MHz, UWB systems can be…

European Physical Journal: Applied Physics, 2011, 53 (3), pp.33608-1-6. ⟨10.1051/epjap/2011100067⟩. ⟨hal-00672786⟩

• Article dans une revue

Substrate integrated waveguide (SIW) inductive window band-pass filter based on post-wall irises

K. Nouri, Kamel Haddadi, O. Benzaïm, T. Lasri, M. Feham

In this article, we demonstrate a new inductive-window 5.245-GHz-band-pass filter based on post-wall irises by standard PcB process on Epoxy FR4 substrate. A new and easy to build microstrip-to-waveguide transition that consists of three tapers is also designed to connect the filter to standard…

European Physical Journal: Applied Physics, 2011, 53 (3), pp.33607-1-5. ⟨10.1051/epjap/2010100057⟩. ⟨hal-00672781⟩

• Article dans une revue

Study of HF behaviour of railway power substation in reduced scale

H. Ouaddi, S. Baranowski, G. Nottet, B. Demoulin, L. Koné

The study presented in this paper is a first step of an EMC (Electromagnetic Compatibility) analysis of the behaviour of a railway power substation at high frequency. Before on site intensive experimentation, the approach is performed with a reduced scale model. The mock-up of the substation is…

European Physical Journal: Applied Physics, 2011, 53 (3), pp.33603-1-7. ⟨10.1051/epjap/2010100061⟩. ⟨hal-00672788⟩

• Brevet

Procédé de fabrication de transistors MOSFET complémentaires de type P et N, et dispositif électronique comprenant de tels transistors, et processeur comprenant au moins un tel dispositif

Guilhem Larrieu, Emmanuel Dubois

• Article dans une revue

Star-drops formed by periodic excitation and on an air cushion - A short review

Philippe Brunet, Jacco H Snoeijer

When simply put on a solid, a liquid drop usually adopts the shape of a spherical cap or a puddle depending on its volume and on the wetting conditions. However, when the drop is subjected to a periodic field, a parametric excitation can induce a transition of shape and can break the drop’s initial…

The European Physical Journal. Special Topics, 2011, 192, pp.207-226. ⟨10.1140/epjst/e2011-01375-5⟩. ⟨hal-00579074⟩

• Thèse

Étude et conception d'un système IR-UWB dédié aux communications sans fils haut débit, Study and design of IR-UWB system dedicated to high speed wireless communication

Amel El Abed

L’objectif de ce travail de thèse est la mise en œuvre de nouvelles techniques de codage pour les signaux Ultra Large Bande (ULB) dans le but d’augmenter le débit offert et améliorer la robustesse du lien de communication pour des applications multimédias et transport (communication véhicule-…, The main objective of this thesis is to implement new UWB coding techniques in order to increase the data rate flow and to enhance the robustness ensured by UWB communication for multimedia and transports applications (vehicle –Infrastructure communication). The UWB is an emerging and promising…

Electronique. Université de Valenciennes et du Hainaut-Cambrésis, 2011. Français. ⟨NNT : 2012VALE0004⟩. ⟨tel-03416574⟩

• Communication dans un congrès

B(Al,Ga)N materials capability for advanced optic devices structures in the UV range

S. Gautier, M. Abid, T. Moudakir, G. Orsal, V. Ravindran, O. Naciri, A. Migan-Dubois, Z. Djebbour, David Troadec, A. Soltani, G. Patriarche, A. Ougazzaden

SPIE 2011, Jan 2011, San Francisco, United States. ⟨hal-00578877⟩

• Article dans une revue

Deep structural analysis of novel BGaN material layers grown by MOVPE

S. Gautier, G. Patriarche, T. Moudakir, M. Abid, G. Orsal, K. Pantzas, David Troadec, A. Soltani, L. Largeau, O. Mauguin, A. Ougazzaden

BGaN ternary alloys with 0.7% and 1.7% boron grown on GaN/sapphire template substrates by metalorganic vapour phase epitaxy (MOVPE) have been investigated through HAADF-STEM. At low boron content, 0.7%, no compositional fluctuations were observed with XRD or STEM measurements. Photoluminescence at…

Journal of Crystal Growth, 2011, 315 (1), pp.288-291. ⟨10.1016/j.jcrysgro.2010.08.042⟩. ⟨hal-00554231⟩