Laser Evaporation Studies.

Abstract

The used of a pulsed laser to evaporate dielectric materials for optical thin film deposition was investigated. The electrical properties of the laser induced plasma in the evaporant plume were studies. High flux (20A/sq cm) of high velocity (1 to 10 million) cm/s) ionic species were observed in the TEA-CO2 laser evaporation of many refractory oxide, chalcogenides and fluorides. Thin films of ZrO2 were deposited out of a plasma described above. These films were dense, oriented polycrystalline and had bulk refractive index values (2,15), low absorption (K about 0.001) and low particulate density for a range of laser fluence values. In the next and final phase of this project, thin film studies will be extended to a wider array of materials, with emphasis on obtaining high quality films with low particulate densities. Keywords: Zirconium dioxide; Carbon dioxide lasers; Tea lasers.

Document Details

Document Type
Technical Report
Publication Date
Oct 01, 1986
Accession Number
ADA176826

Entities

People

  • H. Sankur

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Carbon Dioxide
  • Carbon Dioxide Lasers
  • Ceramic Materials
  • Dielectrics
  • Electrical Properties
  • Films
  • Lasers
  • Materials
  • Pulsed Lasers
  • Refractive Index
  • Tea Lasers
  • Thin Films

Fields of Study

  • Physics

Readers

  • Pulsed Power and Plasma Physics.
  • Thin Film Deposition Science.

Technology Areas

  • Directed Energy
  • Directed Energy - Pulsed-Laser Deposition