Accession Number : AD0432341


Title :   GROWTH OF BROAD LINEWIDTH RUBY CRYSTALS.


Descriptive Note : Semiannual technical summary rept., 1 July31 Dec 63,


Corporate Author : AIRTRON INC MORRIS PLAINS NJ


Report Date : 31 Dec 1963


Pagination or Media Count : 37


Abstract : Progress is reported in perfecting techniques for the growth of ruby from PbF2 fluxes. Large ruby plates up to 3/8 in. thick and 2 in. in maximum dimension have been grown. Solubility of dilute ruby in PbF2 was measured by heating Al203 and Cr203 in PbF2, slowly cooling the melt to a specified temperature, decanting and quenching the melt in a water cooled platinum crucible, and determining the remaining Al203 by wet chemical analysis. This work show a solubility of dilute ruby at 1000 C of 21.8 mole percent and at 1200 C of 23.9 mole percent. Cr(3+) content was about 0.02 mole percent. A rod, 1.172-in. long x 0.213 in. diameter, cut from a ruby plate, was silvered and polished. It lased at 1200 joules at 200 K in a 3-in. long laser head. (Author)


Descriptors :   *RUBY , *ALUMINUM COMPOUNDS , CRYSTAL GROWTH , OXIDES , CHROMIUM , LINE SPECTRA , GALLIUM COMPOUNDS , YTTRIUM COMPOUNDS , SAPPHIRE , SOLID SOLUTIONS , SOLUBILITY , FLUXES(FUSION) , LEAD COMPOUNDS , FLUORIDES , CRYSTALLIZATION , NUCLEATION , HIGH TEMPERATURE , SCIENTIFIC RESEARCH , CHROMIUM COMPOUNDS , FLUORESCENCE , LASERS


Distribution Statement : APPROVED FOR PUBLIC RELEASE