Accession Number:

AD0768303

Title:

Laser Damage in Materials

Descriptive Note:

Semi-annual technical rept., 1 Feb-31 Jul 1973

Corporate Author:

NATIONAL BUREAU OF STANDARDS WASHINGTON DC INST FOR MATERIALS RESEARCH

Report Date:

1973-08-01

Pagination or Media Count:

46.0

Abstract:

Neodymiumglass laser induced damage is observed in lithium niobate LiNbO3, calcite CaCO3, potassium dihydrogen phosphate KDP, and deuterated potassium dihydrogen phosphate KDP. The damage at the lowest power levels is caused by inclusions. At higher power levels, filamentary damage, which is indicative of self-focusing, is observed in LiNbO3. An analysis of self-focusing data in yttrium aluminum garnet shows that the Kerr effect is the dominant self- focusing mechanism, with some contribution from the thermal effect. Bulk and surface damage thresholds in neodymium-doped thoriayttrium oxide ceramic are obtained relative to bulk damage thresholds in several optical materials. For solid materials relationships are obtained between the stress-optic coefficients and the electrostrictive coefficients under different geometric boundary conditions.

Subject Categories:

  • Lasers and Masers
  • Optics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE