Fundamental Materials Studies for Advanced High Power Microwave and Terahertz Vacuum Electronic Radiation Sources

Abstract

The results of research sponsored by this grant address two fundamental questions relevant to the advancement of THz-regime device technology (0.1-3 THz). First, they establish a detailed, comprehensive fundamental understanding, of THz-regime conductivity, including the effects of materials imperfections (impurities, defects, surface roughness) in conductive materials (including metals, semiconductors, and graphene). This includes providing accurate predictive theoretical models, robustly validated by experimental measurements. Second, they establish a fundamental understanding of low-emission-barrier scandate cathodes and identify related, alternative cathode materials systems for advanced vacuum electronic cathodes for high power THz-regime sources.

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Document Details

Document Type
Technical Report
Publication Date
Dec 10, 2014
Accession Number
ADA615347

Entities

People

  • John H. Booske

Organizations

  • University of Wisconsin–Madison

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Charge Carriers
  • Density Functional Theory
  • Electron Emission
  • Electron Holes
  • Electronics
  • Electrons
  • Emission
  • Fermi Levels
  • High Power Microwaves
  • Materials
  • Materials Science
  • Molecular Dynamics
  • Semiconductors
  • Surface Energy
  • Surface Roughness
  • Terahertz Radiation
  • Vacuum Electronics

Fields of Study

  • Materials science
  • Physics

Readers

  • Electronics Engineering
  • Quantum Dot Semiconductor Device Photonics and Graphene Optoelectronic Materials and THz Physics.
  • Systems Analysis and Design

Technology Areas

  • Directed Energy
  • Microelectronics