Accession Number : ADA327951

Title :   The Effects of the Pumping Light Penetration and the Powder Density to the Stimulated Emission in Powders of Solid-State Luminophosphors.

Descriptive Note : Quarterly rept. no. 6, 15 Apr-15 Jul 97,

Corporate Author : ALABAMA A AND M UNIV OFFICE FOR RESEARCH AND DEVELOPMENT

Personal Author(s) : Noginov, M. A.

PDF Url : ADA327951

Report Date : 15 JUL 1997

Pagination or Media Count : 17

Abstract : A laser-like emission without a cavity was obtained (at Lambda ^ 800 nm) in powders of Ti-sapphire laser crystal and compared to that in Nd0.5La0.5Al13(BO3)4. The effect of the material volume density on the stimulated emission in Nd0.5La0.5A13(BO3)4 was experimentally studied. We have found that formation of a hole in a powder sample by a pumping laser beam is advantageous for stimulated emission in Ti-sapphire and disadvantageous in Nd0.5La0.5A13(BO3)4. Using the results of our experimental studies of light propagation in powder laser media, we evaluated the penetration depth and the absorption efficiency in the materials studied and explained most of experimental laser results.

Descriptors :   *LASER BEAMS, LASER PUMPING, EMISSION, LIGHT SCATTERING, POWDERS, REFLECTION, PENETRATION, LIGHT TRANSMISSION, DOPING, ABSORPTION COEFFICIENTS.

Subject Categories : Lasers and Masers

Distribution Statement : APPROVED FOR PUBLIC RELEASE