Absorption of Electromagnetic Radiation in the Transparent Regime of Solids.

Abstract

Interaction of high power laser radiation with matter has been considered. In particular, one- and multiphoton absorption coefficients in direct gap semiconductors have been calculated using a number of theoretical models and compared with experimental data. Selective multiple photon absorption by an anharmonic molecule has been treated including the effects of the rotational sublevels and the Stark broadening of the energy levels. The applicability has been examined of the extended avalanche breakdown process to describe window surface damage by pulsed CO2 lasers. A low-loss isolator for 5.26 micrometer radiation utilizing the Zeaman effect in gases has been proposed.

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Document Details

Document Type
Technical Report
Publication Date
Mar 01, 1977
Accession Number
ADA042226

Entities

People

  • Shashanka S. Mitra

Organizations

  • University of Rhode Island

Tags

Communities of Interest

  • Advanced Electronics
  • Energy and Power Technologies
  • Weapons Technologies

DTIC Thesaurus Topics

  • Absorption
  • Absorption Coefficients
  • Band Gaps
  • Coefficients
  • Conduction Bands
  • Differential Equations
  • Electric Fields
  • Electromagnetic Fields
  • Electromagnetic Radiation
  • Energy Bands
  • Equations
  • Experimental Data
  • Frequency
  • Laser Materials
  • Materials
  • Radiation
  • Semiconductors

Fields of Study

  • Engineering
  • Physics

Readers

  • Molecular Photonics/Laser Physics
  • Optical Physics and Photonics.
  • Spectroscopy.

Technology Areas

  • Directed Energy
  • Directed Energy - Lasers
  • Microelectronics