Investigate Material Systems for Mirrors Used in High Power CO and CO2 Lasers

Abstract

This report is aimed at demonstrating the viability of a mirror structure concept formed by sputter deposited materials. The mirror concept would be used in high energy CO, CO2, and other infrared laser systems at the infrared wave length of 10.6 micrometers. Sputtered deposits of Cu-1 vol% SiC on a variety of metal substrates provided surfaces that could be reproducibly polished using conventional techniques to an rms roughness of 20 A or less. Sputter-deposited germanium and CdTe were found to have optical properties near those of bulk material. Sputter deposition of quarter-wavelength reflectivity enhancement coatings therefore appears feasible. The results of limited laser damage testing were exceptional considering that there was not time to optimize material properties.

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Document Details

Document Type
Technical Report
Publication Date
Nov 01, 1974
Accession Number
ADA006101

Entities

People

  • R. W. Stewart

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies
  • Ground and Sea Platforms
  • Weapons Technologies

DTIC Thesaurus Topics

  • Coatings
  • Conductivity
  • Energy
  • Finishes
  • Heat Treatment
  • High Energy
  • Materials
  • Measurement
  • Measuring Instruments
  • Optical Properties
  • Optics
  • Physical Properties
  • Reflectivity
  • Refractive Index
  • Surface Properties
  • Surface Roughness
  • Test And Evaluation

Fields of Study

  • Physics

Readers

  • Systems Analysis and Design
  • Thin Film Deposition Science.

Technology Areas

  • Directed Energy
  • Directed Energy - Pulsed-Laser Deposition