Optically Induced Hot Electron Effects in Semiconductors.

Abstract

Progress is reported in using the high electric fields and ultrashort pulses from mode-locked lasers to study the temporal evolution of the saturable optical properties of semiconductors on a picosecond time scale. In these studies, the excite and probe technique is employed to obtain information concerning the ultrafast dynamics of photogenerated electron-hole plasmas. Germanium has been chosen for the initial investigations since its bandgap energy is comparable to but less than the photon energy of the Nd: glass laser.

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Document Details

Document Type
Technical Report
Publication Date
Aug 31, 1978
Accession Number
ADA060310

Entities

People

  • Arthur L. Smirl

Organizations

  • University of North Texas

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Band Gaps
  • Band Structures
  • Conduction Bands
  • Electron Density
  • Electrons
  • Energy Bands
  • Energy Gaps
  • Excitation
  • Fermi Levels
  • Frequency
  • Laser Beams
  • Laser Pulses
  • Lasers
  • Light (Electromagnetic Radiation)
  • Measurement
  • Narrow Band Gap Semiconductors
  • Optical Properties

Fields of Study

  • Physics

Readers

  • Optical Physics and Photonics.
  • Quantum spin resonance or Electron Paramagnetic Resonance spectroscopy.

Technology Areas

  • Directed Energy
  • Microelectronics