The role of the internal anode geometry and the influence of an axial magnetic field were investigated in a high voltage hollow cathode 469.4 nm HeKr laser. The discharge tube consisted of two 7 cm active length segments having internal anodes with two and four dots, respectively. The discharge was excited by 5 Hz, 250 mu s duration pulses. No significant difference was found in discharge and laser operation parameters using the two or four slotted internal anodes. The axial magnetic field increased tube voltage but decreased the laser output power. Operating simultaneously the two segments an output power at mW level was observed at an unusually high Kr partial pressure of 0.9 mbar. The maximum output power obtained was 12 mW.
|Number of pages||5|
|Journal||Pure and Applied Optics: Journal of the European Optical Society Part A|
|Publication status||Published - Jan 1 1994|
ASJC Scopus subject areas
- Physics and Astronomy(all)