Design and Production of Optical Two Layer Coatings with the Aid of Smith's Circle Diagram.

Abstract

It has been shown that the coating method based on the Smith Chart gives accurate results, shows well the principles involved, and is flexible in that it can take into account differences in the monitoring and operating wavelengths and materials properties. It has also been shown that given two materials, such as MgF2 with a refractive index of 1.38 and ZnS with a refractive index of 2.37, a wide range of materials can be antireflection coated by reversing the order of the coating materials. Materials in the refractive index range 5.6 - 1.9 can be matched to air by non quarter wave layers putting MgF2 first, followed by ZnS the example given is LiNbO3. The Smith Chart also shows that there are two possible answers to every non quarter wave case.

Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1974
Accession Number
ADA004181

Entities

People

  • N. A. Lowde

Tags

DTIC Thesaurus Topics

  • Advanced Materials
  • Engineered Materials
  • Materials
  • Metamaterials
  • Monitoring
  • Plasmonic Materials
  • Production
  • Refractive Index

Fields of Study

  • Physics

Readers

  • Atmospheric Science / Meteorology, specifically Wind Wave Turbulence.
  • Surface Engineering/Surface Coating Technology.
  • Thin Film Deposition Science.