Accession Number : AD0462741


Title :   LASER MATERIALS.


Descriptive Note : Final rept., 1 Apr 64-31 Mar 65,


Corporate Author : KORAD CORP SANTA MONICA CA


Personal Author(s) : Hoskins, R H ; Pastor, R C


Report Date : 30 Apr 1965


Pagination or Media Count : 89


Abstract : The objective of this program has been the development of new laser materials. The approach taken to achieve this objective was divided into three separate phases, as follows: PHASE A - the search, synthesis, and crystal growth of suitable candidates for laser host materials, PHASE B - the synthesis and crystal growth of such systems, consisting of the host and a chosen activator, and PHASE C - the materials evaluation of these systems through measurement of relevant spectroscopic properties. The host materials investigated were Y2O3, LaAlO3, and YAlO3. Significant strides have been made in the powder, the burner (design), and the muffle (design and structural stability) technologies for Y2O3. These advancements have progressed the state of the art in host crystal growth by the conventional Verneuil method from approximately 1/16 inch diameter to approximately 1/2 inch diameter. Although yttria has a melting point much higher than that of corrundum (2450 vs 2050 C), the pace of progress with yttria compares favorably with the improvements obtained in ruby at a similar stage of development. (Author)


Descriptors :   *LASERS , *CRYSTAL GROWTH , MATERIALS , OXIDES , YTTRIUM COMPOUNDS , SYNTHESIS(CHEMISTRY) , ALUMINATES , LANTHANUM COMPOUNDS , ADDITIVES , NEODYMIUM , TERBIUM , SAMARIUM , ERBIUM , FLUORESCENCE , VISIBLE SPECTRA , ULTRAVIOLET SPECTRA , INFRARED SPECTRA , CRUCIBLES , TUNGSTEN , RHENIUM , PHASE STUDIES , IMPURITIES , DYSPROSIUM , YTTERBIUM , SEPARATION , CHROMATOGRAPHIC ANALYSIS , POWDERS , PROCESSING , COLOR CENTERS , X RAY DIFFRACTION , SYMMETRY(CRYSTALLOGRAPHY)


Distribution Statement : APPROVED FOR PUBLIC RELEASE