Optical Response Of Nanostructures

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Optical Response of Nanostructures

Author: Kikuo Cho
language: en
Publisher: Springer Science & Business Media
Release Date: 2013-03-14
This book deals with a recently developed theoretical method for calculating the optical response of nanoscale or mesoscopic matter. There has been much interest in this type of matter system because it brings out a new feature of solid state physics, viz. , the central importance of the quantum mechanical coherence of matter in its transport and optical properties, in contrast to bulk systems. The author has been interested in the optical properies of mesoscopic matter since the mid-1980s, seeking to construct a new theoretical framework beyond the traditional macroscopic optical response theory. The new element to be included is the microscopic spatial structure of the response field and induced polarization, and the nonlocal relationship between them. This is the counterpart of the size quantization of confined electrons or excitons reflecting the sampIe size and shape in detail. AIthough the latter aspect has been widely discussed, the former has not received due attention, and this has prompted the author to introduce a new theoretical framework. This book describes such a theory, as developed by the author's present group. Although it is only one of several such frameworks, we believe that it is constructed in a sufficiently general manner to apply to the study of the linear and nonlinear optical responses of nanostructures of various sizes and shapes, subjects of considerable interest today.
Optical Properties of Nanostructures

This book discusses electrons and photons in and through nanostructures by the first-principles quantum mechanical theories and fundamental concepts (a unified coverage of nanostructured electronic and optical components) behind nanoelectronics and optoelectronics, the material basis, physical phenomena, device physics, as well as designs and applications. The combination of viewpoints presented in the book can help foster further research and cross-disciplinary interaction needed to surmount the barriers facing future generations of technology design.
Optical Properties of Metallic Nanoparticles

This book introduces the fascinating world of plasmonics and physics at the nanoscale, with a focus on simulations and the theoretical aspects of optics and nanotechnology. A research field with numerous applications, plasmonics bridges the gap between the micrometer length scale of light and the secrets of the nanoworld. This is achieved by binding light to charge density oscillations of metallic nanostructures, so-called surface plasmons, which allow electromagnetic radiation to be focussed down to spots as small as a few nanometers. The book is a snapshot of recent and ongoing research and at the same time outlines our present understanding of the optical properties of metallic nanoparticles, ranging from the tunability of plasmonic resonances to the ultrafast dynamics of light-matter interaction. Beginning with a gentle introduction that highlights the basics of plasmonic interactions and plasmon imaging, the author then presents a suitable theoretical framework for the description of metallic nanostructures. This model based on this framework is first solved analytically for simple systems, and subsequently through numerical simulations for more general cases where, for example, surface roughness, nonlinear and nonlocal effects or metamaterials are investigated.