GASEOUS ION LASER RESEARCH.
Final rept. 1 Jul 65-31 Dec 66,
HUGHES RESEARCH LABS MALIBU CA
Pagination or Media Count:
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
- Lasers and Masers