Accession Number : AD0786030

Title :   Development of Polycrystalline Alkali Halides by Strain Recrystallization for Use as High Energy Infrared Laser Windows.

Descriptive Note : Final technical rept. Feb-Oct 73,


Personal Author(s) : Kulin,S. A. ; Neshe,P. P. ; Kreder,K.

Report Date : JAN 1974

Pagination or Media Count : 51

Abstract : The compressive deformation processing of pure KCl and KCl single crystals alloyed with Eu, Rb or Br has been investigated. The variables evaluated in this infrared alloy window fabrication process included temperature, total strain, strain rate, heating and cooling cycles, and quality and orientation of the single crystal starting material. Experimental conditions required to produce crack-free windows were established. Mechanical testing and microstructural observations were performed on such windows. This work has shown the feasibility of producing KCl alloy windows having high mechanical strengths. Further, processing conditions were developed which appear to establish the feasibility of scale-up for the fabrication of windows of very large sizes. (Author)

Descriptors :   *Infrared lasers, *Infrared windows, *Infrared optical materials, *Laser materials, Potassium compounds, Rubidium, Europium, Chlorides, Bromides, Deformation, Crystallization, Strain(Mechanics), Compression, Fabrication, Single crystals, Orientation(Direction)

Subject Categories : Lasers and Masers

Distribution Statement : APPROVED FOR PUBLIC RELEASE