MIOMD-XI Speakers    
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1.  Dr. Thierry Taliercio, Université Montpellier 2, FRANCE
Late-Breaking Results: Surface and localized Plasmons Polaritons on arrays of doped and undoped semiconductors
Speaker Biography: Thierry Taliercio: was born in Aix en Provence (France) in 1970. Married and three children. He received the HDR (Habiliation à Diriger les Recherches) diploma in solid state physics in 2003 from the University of Montpellier. He is an associate professor in the Institut d’Electronique du Sud since 2008 (NANOMIR group). From 1999 to 2007, he was associate professor in the Groupe d'Etude des Semiconducteurs (GES in Montpellier-France). He is a specialist of the optical properties of nitride semiconductors and particularly of semiconductor nano-structures: small (GaInNAs) and wide (InGaN, GaN, AlN) band gap nitride semiconductors. He developed several experimental techniques to measure carriers decay times in semiconductor nano-structures in the infra-red as well as in the UV range within the frame of the ACI project BAND (2003-2006). He developed a micro-photoluminescence experiment in the UV range to study the optical properties of a single GaN/AlN quantum dot, supported by the ACI project BUGATI (2003-2006) and the ANR ZOOM. He developed several simulation tools to model the optical properties of semiconductor based nanostructures. He is now working on photo-voltage spectroscopy to characterize the density of states of mid-infra-red laser and an angular resolved reflectance and transmittance experiment in the IR range (1-20 μm) to study IR photonic and plasmonic nanostructures. Doctor Thierry Taliercio is author/co-author of 76 publications in refereed journals including 42 communications in international conferences and two book chapters. Its articles are quoted 1136 times and its impact factor is of 19.

Summary: Surface plasmon polaritons (SPP) are excitations propagating at the interface between a dielectric and a conductor, arising from the coupling of the electromagnetic field and collective excitations of free electrons in the conductor. Many studies are based on metal nanostructures exploiting SPPs resonances from visible to mid-infrared frequencies. We focus our work on doped semiconductors. In contrast to metals, they offer the unique opportunity to adjust the plasma frequency by changing the doping. We recently proposed a theoretical model which describes the optical properties of an InAsSb/GaSb periodical nanostructure in a large range of frequency. The optical properties of these arrays are indeed strongly dependent on the geometry and on the dielectric constant of both materials. In this work, we validate experimentally the existence of SPP resonances in InAsSb and InAsSb/GaSb arrays and study the impact of several parameters.
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