Accession Number : ADA954858


Title :   Casting of Halide and Fluoride Alloys for Laser Windows


Descriptive Note : Quarterly technical rept. no. 1, 15 Mar-14 Jun 1974


Corporate Author : RAYTHEON CO WALTHAM MA RESEARCH DIV


Personal Author(s) : Newberg, R T ; Readey, D W ; Newborn, H A


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a954858.pdf


Report Date : 15 Jul 1974


Pagination or Media Count : 77


Abstract : During the first quarter of this program several important goals were accomplished. The problem of residual strain in castings of halides (KCl and SrCl2 doped KCl) and fluorides (pure CaFs) has been largely overcome by using proper annealing and cooling procedures. Large castings (5 1/2 in. diameter) of CaF2 have been produced with low optical absorption coefficients at 5.25 micrometers. Semi-quantitative analysis of absorption coefficients and scattering centers has been initiated with preliminary results showing a correlation between the two. Reactive atmosphere processing (RAC) of castings has begun.


Descriptors :   *LASERS , ABSORPTION COEFFICIENTS , ALLOYS , ANNEALING , ATMOSPHERES , CASTING , CASTINGS , COEFFICIENTS , COOLING , FLUORIDES , HALIDES , OPTICAL PROPERTIES , PROCESSING , REACTIVITIES , RESIDUALS , SCATTERING , STRAIN(MECHANICS) , WINDOWS


Subject Categories : Lasers and Masers


Distribution Statement : APPROVED FOR PUBLIC RELEASE