A Technique for Increasing the Optical Strength of Single-Crystal NaC1 and KC1 through Temperature Cycling.
Abstract
This report relates a technique for increasing the optical strength of NaC1 and KC1 single-crystal samples. The 1.06-micrometer pulsed laser damage thresholds were increased by factors as large as 4.6 for a bulk NaC1 single-crystal sample. The bulk laser damage breakdown threshold (LDBT) of the crystal was measured prior to and after heat treatment at 800 degrees C using a Nd:YAG laser operating at 1.06 micrometer. Bulk and surface LDBTs were also studied on samples annealed at 400 degrees C. These samples showed differences in damage morphology on both cleaved and polished surfaces, and the cleaved surfaces had improved damage thresholds. However, neither the polished surfaces nor the bulk showed improved threshold at the lower annealing temperature.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1983
- Accession Number
- ADA138280
Entities
People
- J. B. Franck
Organizations
- Naval Air Weapons Station China Lake