DTIC AD0776804: Visible and Infrared Laser-Induced Damage to Transparent Materials

by: Defense Technical Information Center

Publication date: 1974-01-01

Topics: DTIC Archive, Fradin, David W, RAYTHEON CO WALTHAM MA RESEARCH DIV, *CARBON DIOXIDE LASERS, *LASER MATERIALS, *OPTICAL MATERIALS, *RADIATION EFFECTS, ALKALI METAL COMPOUNDS, GAS LASERS, INFRARED LASERS, MIRRORS, OPTICAL COATINGS, OPTICAL GLASS, SODIUM CHLORIDE, ZINC SELENIDES,

Collection: dticarchive; additional_collections

Language: English

The basic objectives of this program was to analyze data obtained from carefully controlled damage measurements at laser wavelengths between 0.69 and 10.6 micrometers and at various laser pulse durations. The effort was divided into six major areas: They were (1) design and assembly of a pulsed CO2 TEA laser for use in 10.6 micrometer damage measurements, (2) a study of the effects of lattice disorder, polycrystallinity, alloying, and atomic impurity doping on intrinsic damage fields, (3) measurements of the dependence of intrinsic breakdown fields on laser pulse duration, (4) bulk and thin film optical damage from inclusion absorption, (5) the relationship between self- focusing and optical damage, and (6) analytical studies of laser-induced electron avalanche breakdown.