Lecture by Prof. Javier García de Abajo, IQFR-CSIC, Spain

Title: Plasmons in atomic-scale structures

Abstract

The recent observation and extensive theoretical understanding of plasmons in graphene has triggered the search for similar phenomena in other atomically thin materials, such as noble-metal monolayers and molecular versions of graphene. The single-atom carbon layer features several advantages with respect to more conventional materials, including a large electro-optical tunability and extreme optical-field enhancement, which are suitable building blocks to produce complete optical absorption, extreme light modulation, and ultra sensitive response down to the single-molecule level. Interestingly, these phenomena can be electrically modulated at microelectronic speeds through the use of gating technology. However, plasmons in graphene have only been observed at mid-infrared and lower frequencies, and therefore, small molecular structures and atomically thin metals constitute attractive alternatives to achieve fast electro-optical modulation in the visible and near-infrared (vis-NIR) parts of the spectrum. Here, we will discuss the challenges and opportunities introduced by these types of materials, including their application to quantum optics, electro-optical devices, and sensing.

Time

Tue 21 Oct 14
10:00 - 11:00

Organizer

DTU Fotonik

Where

Lyngby Campus
Building 306, auditorium 37