Dimensional Stability of Fused Silica, Invar, and Several Ultralow Thermal Expansion Materials

Abstract

We have measured length change vs time for several low thermal expansion materials maintained in evacuated environments at constant temperature (near 300 K). Materials were two types of fused silica, Cer-Vit, ULE, Zerodur, Invar, and Super Invar. Delta L/L was measured over a period of 170 days to a precision of two to three parts in 10(exp5). In addition, we have measured time dependent changes in optical contact interfaces and have placed an upper limit on drift of optical phase shift on reflection from multilayer dielectric coatings.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1976
Accession Number
ADA339211

Entities

People

  • J. W. Berthold Iii
  • M. A. Norton
  • S. F. Jacobs

Organizations

  • University of Arizona

Tags

Communities of Interest

  • Advanced Electronics
  • Weapons Technologies

DTIC Thesaurus Topics

  • Accuracy
  • Climate Change
  • Environment
  • Fabrication
  • Frequency
  • Frequency Shift
  • Heat Treatment
  • Materials
  • Measurement
  • Optical Materials
  • Optics
  • Phase Shift
  • Reflection
  • Resonance
  • Resonant Frequency
  • Thermal Expansion
  • Universities

Fields of Study

  • Physics

Readers

  • Mechanical Engineering/Mechanics of Materials.
  • Quantum Dot Semiconductor Device Photonics and Graphene Optoelectronic Materials and THz Physics.
  • Thermal Physics or Thermal Science.