Accession Number : ADA299819

Title :   Single Crystal Growth of Potassium Titanyl Arsenate (KTA) for Nonlinear Optics.

Descriptive Note : Final rept. Sep 90-Oct 93,

Corporate Author : LITTON SYSTEMS INC MORRIS PLAINS NJ AIRTRON DIV

Personal Author(s) : Belt, Roger F. ; Ings, John W. ; Randles, Mark H. ; Iradi, Thomas E., Sr

PDF Url : ADA299819

Report Date : 01 NOV 1993

Pagination or Media Count : 82

Abstract : This program was directed to the hydrothermal crystal growth of the nonlinear optical material potassium titanyl arsenate, KTiOAsO4. The solubility and phase relations were investigated for selected K/As ratios in KH2 AsO4 -KOH solutions over a temperature range of 300-600 deg C and 10,000-30,000 psi. The P-V-T data were generated and extrapolated for use in gold liners and Rene' 41 autoclaves with a pressure balancing method. All data were transferred to 1.5 inch diameter x 18 inch long autoclaves. Growth runs were made for 7-10 weeks under a gradient of 30 deg C with a 10 molar KH2AsO4 mineralizer. We have grown crystals of 18 x 18 x 35 mm at rates of up to lmm/side/week. The crystals were single domain, high internal quality, and water white. A final production process was developed, crystals were tested in different OPO applications and results reported in several papers.

Descriptors :   *SINGLE CRYSTALS, *NONLINEAR OPTICS, *CRYSTAL GROWTH, *POTASSIUM, *TITANIUM COMPOUNDS, *ARSENATES, TEMPERATURE, PRODUCTION, WATER, OPTICAL MATERIALS, PHASE STUDIES, LININGS, INTERNAL, PRESSURE, RANGE(EXTREMES), SOLUBILITY, GOLD, HYDROXIDES, AUTOCLAVES.

Subject Categories : Inorganic Chemistry
      Physical Chemistry
      Laminates and Composite Materials
      Crystallography
      Optics

Distribution Statement : APPROVED FOR PUBLIC RELEASE