Title :
Efficiency characterization of vacuum ultraviolet molecular fluorine (F2) laser (157 nm) excited by an intense electric discharge
Author :
Kakehata, Masayuki ; Uematsu, Tatsuya ; Kannari, Fumihiko ; Obara, Minoru
Author_Institution :
Dept. of Electr. Eng., Keio Univ., Yokohama, Japan
fDate :
11/1/1991 12:00:00 AM
Abstract :
Detailed experimental results of a discharge-excited high-pressure F2 laser are compared with a model prediction. Special emphasis is placed on the output performance of the discharge-pumped F 2 laser at extremely high excitation rates (10~35 MW/cm3 ) by using high-pressure laser mixtures up to 8 atm. The kinetics model predicts fractional contributions of excited F2 formation channels, relaxation channels, and absorption channels together with the formation and extraction efficiencies at the experimental conditions. Although the only experimental quantity compared with the model prediction is laser output energy, it is enough to obtain a better understanding of major F2 laser kinetics and key issues for improving the efficiency
Keywords :
X-ray lasers; excimer lasers; fluorine; laser theory; 157 nm; 4 to 8 atm; F2; VUV laser; absorption channels; efficiency characterisation; excimer laser; excited F2 formation channels; extraction efficiencies; high-pressure F2 laser; intense electric discharge; kinetics model; laser output energy; output performance; relaxation channels; Fault location; Helium; Kinetic theory; Laser excitation; Laser modes; Laser theory; Photochemistry; Power lasers; Predictive models; Pump lasers;
Journal_Title :
Quantum Electronics, IEEE Journal of
