50 J discharge-pumped XeCl laser

Author

Hasama, Toshifumi ; Miyazaki, Kenzo ; Yamada, Kawakatsu ; Sat, Takuzo

Author_Institution

Electrotech. Lab., Ibaraki, Japan

Volume

25

Issue

1

fYear

1989

fDate

1/1/1989 12:00:00 AM

Firstpage

113

Lastpage

120

Abstract

An X-ray preionized XeCl laser with a wide aperture of 10×10 cm² is described. The density for preionization electrons is estimated from an X-ray energy distribution to be greater than 6×10⁹ cm^-3 under operational gas conditions. In high pressure operation at 4500 torr, sufficient preionization has led to successful discharge-breakdown at a low E/N of 6.4×10^-17 V-cm², resulting in a high electrical efficiency of 3.1% with an output energy of 17.6 J. An output energy of 50 J in an 85-ns (FWHM) optical pulse has been extracted from an active volume of about 10:1 for a pulse-forming-line (PFL) voltage of 400 kV. The effects of impedance transformation of a pulse-transmission-line (PTL) following the PFL have been investigated using two types of PTL with output impedances of 0.26 and 0.48 Ω

Keywords

discharges (electric); excimer lasers; xenon compounds; 17.6 J; 3.1 percent; 400 kV; 4500 torr; 50 J; 85 ns; X-ray preionized XeCl laser; XeCl; discharge-breakdown; electrical efficiency; excimer laser; high pressure operation; impedance transformation; output energy; preionization electrons; pulse-forming-line voltage; pulse-transmission-line; Apertures; Impedance; Laser excitation; Optical amplifiers; Optical pulses; Pulse amplifiers; Pump lasers; Switches; Voltage; X-ray lasers;

fLanguage

English

Journal_Title

Quantum Electronics, IEEE Journal of

Publisher

ieee

ISSN

0018-9197

Type

jour

DOI

10.1109/3.16250

Filename

16250