Accession Number : AD0814897

Title :   GASEOUS ION LASER RESEARCH.

Descriptive Note : Final rept. 1 Jul 65-31 Dec 66,

Corporate Author : HUGHES RESEARCH LABS MALIBU CA

Personal Author(s) : Bridges, W. B. ; Halsted, A. S.

Report Date : MAY 1967

Pagination or Media Count : 300

Abstract : The basic mechanisms of ion lasers are discussed and scaling laws derived based on these mechanisms. The results of a parametric study confirming these scaling laws are presented. Measurements of power output and efficiency as a function of tube diameter, length, gas pressure, magnetic field, and mirror transmission are given and compared with theory. Plasma properties are summarized, including magnetic field effects and conditions in the bore constrictions. The design and performance characteristics of high power lasers constructed with quartz, ceramic, and segmented metal and graphite bores are reported. A theory for gas pumping in low pressure arcs is presented and compared with the measured rates of gas pumping in ion lasers. The dependence of the gas pumping rate on gas pressure, discharge current, magnetic field, and external gas return path is given. Problems with mirror damage and mode distortion in high power argon lasers are described. Based on the results of a mirror evaluation program, mirrors and surface cleaning techniques are recommended. (Author)

Descriptors :   (*GAS LASERS, IONS), ELECTROPHORESIS, MAGNETIC FIELDS, ARGON, MIRRORS, PRESSURE, DAMAGE, QUARTZ, MOLYBDENUM, GRAPHITE, PUMPING(ELECTRONICS).

Subject Categories : Lasers and Masers

Distribution Statement : APPROVED FOR PUBLIC RELEASE