Preparation and properties of fluoride glasses. Final report, May 1, 1975--April 30, 1978. [Fluorberyllates]

Technical Report · Mon May 01 04:00:00 EDT 1978

OSTI ID:6692468

Mackenzie, J D

Research into the production of fluorberyllate laser glass has shown that these glasses are of tremendous potential as high power laser materials. Their spectroscopic properties are vastly superior to currently available silicate, phosphate or fluorophosphate glass systems. Fabrication of fluoroberyllate glasses is extremely difficult. Atmospheric and crucible reactions can be quite severe. Best results were obtained using covered vitreous carbon crucibles in a dry, nonreactive atmosphere (e.g., N/sub 2/). Atmosphere reactions can have a pronounced effect on the uv cutoff. A distillation device for purification of BeF/sub 2/ has been built. Distillation was able to eliminate most of the common impurities, and in particular, ''water.'' Thus for high purity glasses, distillation should be considered. The role of ''water'' in fluoroberyllate glass systems is not entirely understood, but it should not be underestimated. Its effect on properties such as the electrical resistivity appear to be substantial. Its role on the optical processes involved in laser glasses can be very significant depending on the laser wavelength. It is possible that traces of ''water'' can alter the refractive index of these glasses as well. (10 figures, 11 tables)

• Research Organization: California Univ., Los Angeles (USA). Dept. of Materials
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 6692468
• Report Number(s): UCRL-13871
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420300* -- Engineering-- Lasers-- (-1989)
ALKALI METAL COMPOUNDS
ALKALINE EARTH METAL COMPOUNDS
ALUMINIUM COMPOUNDS
ALUMINIUM FLUORIDES
BARIUM COMPOUNDS
BARIUM FLUORIDES
BERYLLIUM COMPOUNDS
BERYLLIUM FLUORIDES
CALCIUM COMPOUNDS
CALCIUM FLUORIDES
CALCIUM HALIDES
CHEMICAL COMPOSITION
COMPARATIVE EVALUATIONS
DISSOCIATION ENERGY
DISTILLATION
DOPED MATERIALS
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ENERGY
FLUORIDES
FLUORINE COMPOUNDS
GLASS
HALIDES
HALOGEN COMPOUNDS
HYDROGEN COMPOUNDS
IMPURITIES
LASER MATERIALS
LITHIUM COMPOUNDS
LITHIUM FLUORIDES
LITHIUM HALIDES
MELTING
NEODYMIUM COMPOUNDS
NEODYMIUM FLUORIDES
OPTICAL PROPERTIES
OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
POTASSIUM COMPOUNDS
POTASSIUM FLUORIDES
QUANTITY RATIO
RARE EARTH COMPOUNDS
SEPARATION PROCESSES
VITRIFICATION
WATER