Title :
Theoretical and experimental study of KrF fluorescence in a multimicrosecond longitudinal discharge
Author :
Kumagai, Hiroshi ; Obara, Minoru
Author_Institution :
Dept. of Electr. Eng., Keio Univ., Yokohama, Japan
fDate :
8/1/1988 12:00:00 AM
Abstract :
Multimicrosecond KrF (B→X) fluorescence characteristics were measured using KrF laser mixtures pumped by a low-pressure longitudinal stable discharge to make clear the mechanism of the premature termination of the KrF laser. Using the experimental setup with a seven-stage pulse-forming network (PFN), a KrF fluorescence pulse with a pulse duration of 2.0 μs was obtained at a total pressure of 75 torr, whose gas mixture was F2/Kr/He=0.1/7.5/92.4(%). The pulse width (FWHM) of KrF fluorescence was decreased from 1400 ns to 500 ns with increasing F2 concentration from 0.1 to 1.5%. The theoretical analysis made it clear that this termination mechanism was strongly due to the KrF fluorescence kinetics
Keywords :
discharges (electric); gas lasers; krypton compounds; molecular fluorescence; 1400 to 500 ns; 2.0 mus; 75 torr; B→X) fluorescence characteristics; F2 concentration; KrF fluorescence; kinetics; laser mixtures; low-pressure longitudinal stable discharge; mechanism; multimicrosecond longitudinal discharge; premature termination; pulse duration; pulse width; pumping; seven-stage pulse-forming network; Fluorescence; Gas lasers; Kinetic theory; Laser mode locking; Laser stability; Laser theory; Optical pulse generation; Pump lasers; Space vector pulse width modulation; Switches;
Journal_Title :
Plasma Science, IEEE Transactions on
