Accession Number : AD0447907

Title :   RESEARCH ON PROPERTIES OF LASER DEVICES.

Descriptive Note : Quarterly technical summary rept. no. 9, 1 Jun31 Aug 64,

Corporate Author : CONTROL DATA CORP MELVILLE NY TRG DIV

Personal Author(s) : Kaplan, R.

Report Date : 31 AUG 1964

Pagination or Media Count : 48

Abstract : This report discusses research on laser devices in two major areas: gas laser media and output control. An apparatus was completed for testing the principle of relaxation of the lower laser level in a gas discharge by inelastic atom-atom collisions. An alumina tube for containing a manganese-noble gas mixture at 1350 C was rebuilt. He-Xe test oscillations were generated in this tube at 1350 C. A resistance-heated tantalum tube for containing a lanthanum-noble gas mixture at 1800 C was completed. A discharge current density of 0.5 amp/sq. cm was achieved between this tube and a concentric tungsten filament over a length of 10 cm. Progress was made in the investigation of improvements in energy radiance which can be achieved by mode selection in a ruby cavity. An accurate technique for measuring pulse energy per unit solid angle was established. A five-fold increase in angular energy density was observed when one reflector was moved far enough away from the ruby to discriminate effectively against off axis modes. (Author)

Descriptors :   *LASERS, *SOLID STATE PHYSICS, GASES, COLLISIONS, INELASTIC SCATTERING, GASES, MANGANESE, LANTHANUM, PUMPING(ELECTRONICS), CONTROL, BROADBAND, HELIUM, XENON, MIXTURES, HIGH TEMPERATURE, EXCITATION, THALLIUM COMPOUNDS, BROMIDES, CESIUM COMPOUNDS, ALUMINUM COMPOUNDS, OXIDES, DISCHARGE TUBES, ULTRAVIOLET RADIATION, THERMAL NEUTRONS, ATOMIC ENERGY LEVELS, EXCITATION.

Distribution Statement : APPROVED FOR PUBLIC RELEASE