Study of surface finishing and coating of df laser windows. Annual technical report, 1 Apr 1975--31 Mar 1976

Technical Report · Sat May 01 00:00:00 EDT 1976

OSTI ID:7133458

Braunstein, A I; Garcia, B; Rudisill, J E

Work was done in surface finishing to provide optimum surfaces for film adhesion and to eliminate damage and contaminants which contribute to absorption, reduce laser damage thresholds, and reduce environmental stability. Attention was focused on techniques to fabricate flat and parallel windows, with the ultimate goal of scale-up to satisfy operational needs. Emphasis was placed on SrF/sub 2/ and CaF/sub 2/ windows since these are the current best candidates for the DF laser band. The properties of coating materials were studied to develop a catalog of usable materials. Particular attention was paid to refractive indices which are necessary for the design of antireflective coatings that have low reflectance over the entire DF laser band. The results of this survey provide the only firm data to date on the absorption of prospective coating materials in the DF laser band. (GRA)

• Research Organization: Hughes Research Labs., Malibu, Calif. (USA)
• OSTI ID: 7133458
• Report Number(s): AD-A-025710
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420300* -- Engineering-- Lasers-- (-1989)
ALKALINE EARTH METAL COMPOUNDS
CALCIUM COMPOUNDS
CALCIUM FLUORIDES
CALCIUM HALIDES
CHEMICAL LASERS
COATINGS
FLUORIDES
FLUORINE COMPOUNDS
HALIDES
HALOGEN COMPOUNDS
LASERS
OPENINGS
STRONTIUM COMPOUNDS
STRONTIUM FLUORIDES
SURFACE FINISHING
WINDOWS