Accession Number : ADA299620

Title :   The Interaction of Ultraviolet Laser Radiation with Metal and Semiconductor Surfaces.

Descriptive Note : Final rept. 1 May 92-31 May 95,

Corporate Author : COLUMBIA RADIATION LAB NEW YORK

Personal Author(s) : Osgood, Richard M., Jr

PDF Url : ADA299620

Report Date : 04 AUG 1995

Pagination or Media Count : 60

Abstract : The first observations of image states on solid surfaces were reported about ten years ago using inverse photoemission and two-photon photoemission (2PPE), and the initial stages in the nonlinear spectroscopy of image states emphasized the measurement of the binding energies of these states as well as their dispersion relations or effective masses. More recently, work in this area has sought to exploit the relative precision of image-state spectroscopy by using their high-resolution two-photon photoemission spectra as a probe of surface conditions as well as the interfacial physics. Simultaneously with this work, the image-state spectroscopy has been developed into a powerful and unique probe of surface/near-surface electronic structures and electron dynamics, enabling new insights into the physics of nanostructured. ARO support of this program has enabled us to make significant progress in uncovering the physics of low-dimensional electron systems, utilizing the high-resolution angle-resolved 2PPE. Our progress is reported below in four sections.

Descriptors :   *METALS, *ULTRAVIOLET RADIATION, *INTERACTIONS, *SEMICONDUCTORS, *ULTRAVIOLET LASERS, ANGLES, PROBES, SPECTROSCOPY, INTERFACES, STRUCTURAL PROPERTIES, ELECTRONIC EQUIPMENT, HIGH RESOLUTION, SPECTRA, NONLINEAR SYSTEMS, PHYSICS, SURFACE PROPERTIES, NUCLEAR BINDING ENERGY, PHOTOELECTRIC EMISSION, IMAGES, PHOTONS, INVERSION, SOLID BODIES, ELECTRODYNAMICS, DISPERSION RELATIONS.

Subject Categories : Lasers and Masers
      Inorganic Chemistry
      Radiation and Nuclear Chemistry
      Atomic and Molecular Physics and Spectroscopy

Distribution Statement : APPROVED FOR PUBLIC RELEASE