Accession Number : AD0825477

Title :   CRYSTALS FOR OPTICAL MASER APPLICATIONS.

Descriptive Note : Quarterly rept. no. 1, 21 Jun-20 Sep 67,

Corporate Author : SPERRY RAND RESEARCH CENTER SUDBURY MA

Personal Author(s) : Kestigian, Michael ; Holloway, William W., Jr. ; McMahon, Donald H.

Report Date : DEC 1967

Pagination or Media Count : 16

Abstract : Increased concentrations of neodymium activator ions have been incorporated in optical-quality single crystals of yttrium aluminum garnet. The Czochrlaski technique has been used to prepare single crystals from yttrium aluminum garnet melts which have contained up to 11.5 atomic percent neodymium activator ions together with an equal concentration of size-compensating cations. Lutetium was utilized as the size-compensating cation in these crystal growth experiments. Preliminary optical measurements have been performed upon slices cut from representative single crystals. In addition to absorption and fluorescence measurements, lifetime studies are being utilized to determine the optimum concentrations of activator ions. Laser rods are in the process of fabrication for performance evaluation studies. (Author)

Descriptors :   (*SINGLE CRYSTALS, LASERS), GARNET, ALUMINUM COMPOUNDS, NEODYMIUM, OPTICAL EQUIPMENT, LIQUIDS, EXCITATION, CRYSTAL GROWTH, SPECTRUM SIGNATURES, MEASUREMENT, INFRARED SPECTRA.

Subject Categories : Lasers and Masers
      Crystallography

Distribution Statement : APPROVED FOR PUBLIC RELEASE