Title :
Theoretical high-efficiency extraction study of a short-pulse electron-beam-pumped ArF laser amplifier with atmospheric pressure Ar-rich mixtures
Author :
Lee, Young-Woo ; Matsui, Eiichi ; Kannari, Fumihiko ; Obara, Minoru
Author_Institution :
Dept. of Electr. Eng., Keio Univ., Yokohama, Japan
fDate :
9/1/1989 12:00:00 AM
Abstract :
The single-pass (50 cm) amplifier performance of an atmospheric-pressure ArF laser pumped by a 65-ns full-width-at-half-maximum short-pulse electron beam was investigated theoretically for a wide range of excitation rates (0.1-2.0 MW/cm3 ). Atmospheric mixtures of Ne, Ar, and F2 (three mixtures of Ar=40%, 70%, and Ne-free) were studied. A kinetic numerical model of the ArF amplifier with a Ne buffer system was constructed. A one-dimensional propagation treatment considered the gain depletion and saturation absorption spatially and temporally along the optical axis. In this model the rate constants for electron quenching of ArF* of 1.6×10-7, 1.9×10-7, and 2.4×10 -7 cm3/s were used for Ar concentration of 40, 70 percent, and Ar/F2 mixture, respectively
Keywords :
argon compounds; excimer lasers; molecular electron impact excitation; optical saturable absorption; reaction rate constants; 65 ns; ArF laser; Ne buffer system; Ne-Ar-F2 mixtures; amplifier performance; atmospheric mixtures; atmospheric pressure Ar-rich mixtures; electron quenching; excitation rates; full-width-at-half-maximum short-pulse electron beam; gain depletion; high-efficiency extraction; kinetic numerical model; one-dimensional propagation treatment; optical axis; rate constants; saturation absorption; short-pulse electron-beam-pumped ArF laser amplifier; Argon; Electron beams; Kinetic theory; Laser excitation; Laser theory; Numerical models; Optical amplifiers; Optical buffering; Optical propagation; Pump lasers;
Journal_Title :
Quantum Electronics, IEEE Journal of
