Growth and hardening of alkali halides for use in infrared laser windows. Final report 1 May 1972--31 Jul 1975

Technical Report · Thu Jul 31 04:00:00 EDT 1975

OSTI ID:7251507

Martin, J J; Butler, C T; Sibley, W A

KCl crystals pulled from pretreated melts under an Ti gettered inert atmosphere have been shown to have as low an absorption as crystals grown by the RAP Bridgman method. A simple optical method has been developed to analyze KCl:Eu for Eu content. Radiation damage significantly increases the 10.6 ..mu..m absorption of both KCl and NaCl. The absorption increase is caused by the F-aggregate centers. This result probably rules out the use of radiation strengthened KCl for high power laser window applications. The flow stress of KCl:Eu was found to increase linearly with Eu content. The flow stresses of KBr(x)Cl(1-x) crystals have the same temperature dependence as the flow stress of pure KCl.

• Research Organization: Oklahoma State Univ., Stillwater (USA). Dept. of Physics
• OSTI ID: 7251507
• Report Number(s): AD-A-017960
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420300* -- Engineering-- Lasers-- (-1989)
ALKALI METAL COMPOUNDS
CARBON DIOXIDE LASERS
CHLORIDES
CHLORINE COMPOUNDS
CRYSTAL GROWTH
ELEMENTS
EUROPIUM
FABRICATION
GAS LASERS
HALIDES
HALOGEN COMPOUNDS
LASERS
METALS
OPENINGS
POTASSIUM CHLORIDES
POTASSIUM COMPOUNDS
RARE EARTHS
SODIUM CHLORIDES
SODIUM COMPOUNDS
WINDOWS