Accession Number : AD0293197

Title :   ELECTRONICS PROGRAM. OPTICAL MASER STUDIES

Corporate Author : DEPUTY COMMANDER AEROSPACE SYSTEMS INGLEWOOD CALIF

Personal Author(s) : BIRNBAUM,M.

Report Date : 15 NOV 1962

Pagination or Media Count : 1

Abstract : Effort was expended in a fundamental study of useful or potentially useful materials in optical maser technology. Very small crystals of betaGa2O3 and powders of alpha- and beta-Ga2O3 have been prepared, a d preliminary observations of their fluorescence was made. Many solid state lasers, when operated very close to thr shold, exhibit n output which consists of a regularlyspaced series of spikes with an exponentiallydamped amplitude. The phenomenological theory of Statz and deMars predicts these effects. A comparison of the theory and experimental data is given for a three-level system (ruby) and a four-level system (Nd(3+) in glass). A more exact treatment of the rate equations for the three-level system is in better accord with the experimental results for ruby. In the case of the four-level system, the observations are believed to be the first of this type for the Nd(3+) glass laser. The results are in qualitative agreement with the theory. (Author)

Descriptors :   *LASERS, FLUORESCENCE, GALLIUM COMPOUNDS, GLASS, NEODYMIUM, OXIDES, RUBY, SOLID STATE PHYSICS, ZONE MELTING

Distribution Statement : APPROVED FOR PUBLIC RELEASE