|Title:||Active Nanoplasmonic Metamaterials|
|Group/Series/Folder:||Record Group 8.15 - Institute for Advanced Study|
Series 3 - Audio-visual Materials
|Notes:||Croucher Advanced Study Institute on New Materials and New Concepts for Controlling Light and Waves. Talk no.19|
Host: HKUST Institute for Advanced Study.
Sponsor: The Croucher Foundation.
Abstract: Nanoplasmonics and optical metamaterials have in the last 10-15 yeas emerged as a new paradigm in condensed matter optics and nanoscience, offering a fresh perspective to the optical world. They enable the efficient coupling of light fields to the nanoscale, the world of biological or other inorganic molecules. This tight light localisation on truly nanoscopic dimensions (well below the diffraction limit of light) enhances its interaction with mater, paving the way for a multitude of classical and quantum nano-optics applications. However, metal optics suffers from inherent dissipative losses and only recently theoretical and experimental advancements have shown that it is realistically possible to overcome dissipative losses of nanoplasmonic metamaterials, even in the exotic negative-index regime. If the gain supplied by the active medium is sufficient to overcome dissipative and radiative losses, the structure can eve function as a coherent emitter of surface plasmons over the whole ultrathin 2D area, well below the diffraction limit for visible light. The talk will give an overview of recent advances in the field of gain-enhanced plasmonics and optical metamaterias and show that these constitute an exciting new frontier in nanophotonics and nanoscience, and are precursors towards active, intergrated quantum nano-optics. Bringing gain on the nanoscale is anticipated to improve the performance of a host of active nanocomponents, such as electro-optic modulators and light sources, but also passive ones, such as plasmonic waveguides or sensors featuring intensified plasmonic hotspots for single-emitter spectroscopy.
Duration: 36 min.
|Appears in Series:||8.15:3 - Audio-visual Materials|
Videos for Public -- Distinguished Lectures