|Speaker:||García de Abajo, Javier|
|Group/Series/Folder:||Record Group 8.15 - Institute for Advanced Study|
Series 3 - Audio-visual Materials
|Notes:||IAS Distinguished Lecture.|
Croucher Advanced Study Institute on New Materials and New Concepts for Controlling Light and Waves. Tutorial no.7
Host: HKUST Institute for Advanced Study.
Sponsor: The Croucher Foundation.
Abstract: We will discuss the extraordinary optical properties of highly doped graphene, along with new classical and quantum phenomena involving plasmons in this material. Doped graphene can host low-energy collective plasmon oscillations with unprecedented levels of spatial confinement, large near-field enhancement, and long lifetimes, which facilitate their application to enhanced light-matter interaction, optical detection, sensing, and nonlinear optics. We will start with a tutorial description of graphene plasmons and a critical comparison with conventional noble-metal plasmons. A summary of recent experimental observations will be presented, including spatial mapping of confined graphene plasmons and spectroscopic evidence of plasmon-mediated resonant absorption. Theoretical descriptions of graphene plasmons will be examined, ranging from classical electromagnetic theory to firstprinciples quantum-mechanical approaches. We will elucidate the conditions under which quantum nonlocality shows up in the optical response of this material. Classical devices for infrared spectroscopy, sensing, and light modulation will be also discussed. Prospects to extend these phenomena to the visible and near-infrared regimes will be examined. These advances in graphene constitute a viable realization of strong light-matter interaction, temporal control of quantum phenomena, and ultrafast electro-optical tunability in solid-state environments, thus bringing the expectations raised within the field of plasmonics closer to reality.
Duration: 93 min.
|Appears in Series:||8.15:3 - Audio-visual Materials|
Videos for Public -- Distinguished Lectures