General information
Organisation
The French Alternative Energies and Atomic Energy Commission (CEA) is a key player in research, development and innovation in four main areas :
• defence and security,
• nuclear energy (fission and fusion),
• technological research for industry,
• fundamental research in the physical sciences and life sciences.
Drawing on its widely acknowledged expertise, and thanks to its 16000 technicians, engineers, researchers and staff, the CEA actively participates in collaborative projects with a large number of academic and industrial partners.
The CEA is established in ten centers spread throughout France
Reference
SL-DRF-24-0344
Direction
DRF
Thesis topic details
Category
Condensed Matter Physics, chemistry, nanosciences
Thesis topics
TeraHertz surface plasmonic resonators
Contract
Thèse
Job description
Scientific and technological development of the Terahertz (THz) frequency range, a domain of the electromagnetic spectrum that is located in between microwaves and infrared photonics, is timely and subjected to an intense research activity recently. We have recently developed TeraHertz cavities using a plasmonic mechanism based on the surface plasmons of a doped semiconductor. We have demonstrated the remarkable property of these resonators of being able to confine TeraHertz photons in record volumes of the order of 10-7 times smaller than the diffraction limit. This plasmonic mechanism also allows the functionalization and tunability of the cavities thanks to external parameters such as the electric or magnetic field or the temperature, among others. The aim of this thesis will be to develop THz plasmonic cavities and in particular to study their nonlinear behaviour when subjected to intense THz pulses. The aim will be to TeraHertz frequency conversion based on this nonlinearity.
University / doctoral school
Ecole Doctorale de l’Institut Polytechnique de Paris (IP Paris)
IP. Paris
Thesis topic location
Site
Saclay
Requester
Position start date
01/10/2024
Person to be contacted by the applicant
Laplace Yannis yannis.laplace@polytechnique.edu
Ecole Polytechnique
Laboratoire des Solides Irradiés LSI - UMR 7642
Laboratoire des Solides Irradies, Ecole Polytechnique,
91128 Palaiseau cedex
0169334512
Tutor / Responsible thesis director
Laplace Yannis yannis.laplace@polytechnique.edu
Ecole Polytechnique
Laboratoire des Solides Irradiés LSI - UMR 7642
Laboratoire des Solides Irradies, Ecole Polytechnique,
91128 Palaiseau cedex
0169334512
En savoir plus
https://www.polytechnique.edu/annuaire/laplace-yannis
https://portail.polytechnique.edu/lsi/fr/recherche/nouveaux-etats-electroniques/terax-lab
https://portail.polytechnique.edu/lsi/fr/recherche/nouveaux-etats-electroniques/