The Nitrogen Ion Laser
Semi-annual technical rept. no. 6, 1 Oct 1974-31 Mar 1975
TEXAS UNIV AT DALLAS RICHARDSON
Pagination or Media Count:
The characterization of the nitrogen ion laser pumped by charge transfer from He2 is reported in this work. Intense laser emission in the violet at 427 nm has been observed and found to have a linewidth less than 0.3 A. The pumping ion, He2, was produced by discharge of a fast-pulsed electron beam gun, APEX-1, into several atmospheres of a mixture of helium and nitrogen. Excitation current densities were 1.4 KAsq cm at 1 MV over a 1 x 10 cm transverse geometry. Under these conditions, the efficiency of the emission of 427 nm laser radiation was found to be proportional to the total pressure raised to the 1.2 power. Efficiencies of 1.6 relative to the energy lost by the electron beam in the radiating volume have been achieved in volumes of 16 cc. Outputs of 35 mJ have been obtained from the 16 cc working volume at 30 atm pressure.
- Lasers and Masers