Home Newsletter
News Books
Welcome to FreeScience.info Language/Lingua

Books 3054
· Book News
· Most clicked
· Least clicked

Search for a Book
HELP US TO HELP YOU
Add a new Book

Optical excitations in electron microscopy

book
Language:
Author: F. J. Garcia de Abajo
Url: http://arxiv.org/abs/0903.1669
Format: Pdf
Year: 2009
Category: Spectroscopy
Pages: 69
Clicks: 1804

Description
This review discusses how low-energy, valence excitations created by swift electrons can render information on the optical response of structured materials with unmatched spatial resolution. Electron microscopes are capable of focusing electron beams on sub-nanometer spots and probing the target response either by analyzing electron energy losses or by detecting emitted radiation. Theoretical frameworks suited to calculate the probability of energy loss and light emission (cathodoluminescence) are revisited and compared with experimental results. More precisely, a quantum-mechanical description of the interaction between the electrons and the sample is discussed, followed by a powerful classical dielectric approach that can be in practice applied to more complex systems. We assess the conditions under which classical and quantum-mechanical formulations are equivalent. The excitation of collective modes such as plasmons is studied in bulk materials, planar surfaces, and nanoparticles. Light emission induced by the electrons is shown to constitute an excellent probe of plasmons, combining sub-nanometer resolution in the position of the electron beam with nanometer resolution in the emitted wavelength. Both electron energy-loss and cathodoluminescence spectroscopies performed in a scanning mode of operation yield snap shots of plasmon modes in nanostructures with fine spatial detail as compared to other existing imaging techniques, thus providing an ideal tool for nanophotonics studies.

Similar Books
Spectroscopy
Angle-resolved photoemission spectroscopy of the cuprate superconductors
Quantum Mechanics and Spectroscopy
Molecular spectroscopy
Non-Stationary Electric and Optical Properties of Bulk Conductin
Atomes et Lumiére Interaction Matiére Rayonnement
Optical properties of semiconductor nanostructures: Decoherence versus Quantum Control
Many-body Correlation Effects in the Ultrafast Nonlinear Optical Response of Confined Fermi Seas
Optical Physics and Quantum Electronics
Inelastic Light Scattering From Correlated Electrons
Single-Molecule Optics
Probes of Condensed Matter
Nonlinear electron dynamics in metal clusters
Theoretical methods in quantum optics: S-matrix and Keldysh techniques for strong-field processes
Optical properties of semiconductor nanostructures: decoherence versus quantum control
Atomic Spectroscopy
Molecular Spectroscopy
Optical properties of semiconductors
Application of the Green\'s functions method to the study of the optical properties of semiconductors
Linear Response Theory
Optical Properties of Semiconductors
Spin noise spectroscopy: From proof of the principle to applications

Home |  Authors | About | Contact Us |  Email 
 Copyright © 2002-2013 FreeScience.info. 

Best viewed with Mozilla 1.X 1024x768
free scientific books