Accession Number : AD0431679

Title :   RESEARCH ON VITREOUS LASER MATERIALS.

Descriptive Note : Final technical rept. 1 Jan-31 Dec 63.

Corporate Author : CENTRE NATIONAL D'ETUDES DES TELECOMMUNICATIONS ISSY-LES-MOULINEAUX (FRANCE)

Report Date : 31 DEC 1963

Pagination or Media Count : 23

Abstract : A systematic study was made of vitreous materials which would possibly exhibit better performances in laser action than the silicate, borate and boro-silicate glasses which are studied by many workers. About 150 samples were prepared of phosphate and fluoride glasses of different composition, doped, in general, with 2% of neodymium by weight. Neodymium doping was chosen because it has a four level energy system and therefore exhibits Laser action at room temperature. Series of simple alkaline phosphate glasses of different mole ratios had been prepared, as well as series of bivalent cation phosphate glasses, equally of different mole ratios. The influence of fusion time and temperature had been studied by preparing different samples of a phosphate glass of the same composition, at different fusion temperatures and for different fusion times. In order to investigate the influence of the neodymium concentration on the optical properties, a series of phosphate glass of a given composition had been doped with various quantities of neodymium. (Author)

Descriptors :   (*LASERS, MATERIALS), GLASS, IMPURITIES, NEODYMIUM, PHOSPHATES, FLUORIDES, PHASE STUDIES, BERYLLIUM, DENSITY, REFRACTIVE INDEX, MEASUREMENT, ABSORPTION SPECTRA, RARE EARTH ELEMENTS, SINGLE CRYSTALS, BARIUM, SILICATES, OSCILLATORS, PHOSPHATE GLASS, SPECTROPHOTOMETERS

Distribution Statement : APPROVED FOR PUBLIC RELEASE