DQMP - Informal Seminar - 14.09.2022 - 04:00 pm - Ian Aupiais

14.09.2022 16:00 – 17:00

Tunable THz surface plasmon cavities in the deep plasmonic regime

Ian Aupiais
Laboratoire des Solides Irradiés, Ecole Polytechnique

One of the main important point of making on-chip THz technologies is to confine THz photons into highly subwavelength volumes. Such confinement of electromagnetic energy enables to reach a strong light matter coupling hence single emitter level. In plasmonics, it is the surface plasmons which provide an efficient confinement. This one is in the visible/infrared frequencies corresponding to the range of the plasma frequency of the noble metals. But, the use of noble metals limits the potential of THz surface plasmons confinement. In this work, by relying on a THz plasma, we manufacture surface plasmon cavities reaching the deep plasmonic regime of light matter interaction at THz frequencies. Over conventional THz cavities, we achieve record breaking confinement while retaining a critical coupling condition for most of the resonators. Also we demonstrate the frequency tunability of such cavities.

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Bâtiment: Ecole de Physique

Salle MaNEP, Ecole de Physique

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