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Theoretical high-efficiency extraction study of a short-pulse electron-beam-pumped ArF laser amplifier with atmospheric pressure Ar-rich mixtures

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4 Author(s)
Lee, Young‐Woo ; Dept. of Electr. Eng., Keio Univ., Yokohama, Japan ; Matsui, E. ; Kannari, F. ; Obara, Minoru

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

Published in:

Quantum Electronics, IEEE Journal of  (Volume:25 ,  Issue: 9 )

Date of Publication:

Sep 1989

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