Oxide Ceramic Laser

Abstract

Several attempts were made to reduce or eliminate orange peel and extended defect formation in NDY ceramics by introducing changes in powder preparation, processing, and thermal cycling conditions. The preparation of oxalate powder by an aerosol technique reduced residual porosity and orange peel in sintered material made from unmilled powder. A dry milling operation was, nevertheless, the most effective method of reducing orange peel. The lasing performance of NDY laser rods is probably limited by submicroscopic scattering centers having compositional variations in the solid solution matrix. Evidence of substructure in the matrix was revealed by ultramicroscopy and chemical etching techniques. A rapid cooling treatment, again, produced a laser rod with improved lasting performance. It was discovered that controlled oxidation of Yttralox generates a pronounced IR filter behavior.

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Document Details

Document Type
Technical Report
Publication Date
Jan 25, 1973
Accession Number
AD0754837

Entities

People

  • Charles D. Greskovich

Organizations

  • General Electric

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Chemical Etching
  • Crystal Structure
  • Diffraction
  • Etching
  • Fabrication
  • Grain Size
  • Light Scattering
  • Materials
  • Measurement
  • Particle Size
  • Phase
  • Phase Diagrams
  • Scattering
  • Solid Solutions
  • Standards
  • X Rays
  • X-Ray Diffraction

Readers

  • Materials Science and Engineering.
  • Optical Physics and Photonics.
  • Reinforced Composite Materials

Technology Areas

  • Directed Energy