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Proceedings Paper

RF plasma jet generator of singlet delta oxygen for oxygen-iodine laser
Author(s): Josef Schmiedberger; Shinichi Hirahara; Yasuhiro Ichinohe; Masataro Suzuki; Wataru Masuda; Yoshihumi Kihara; Eiji Yoshitani; Hiroo Fujii
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Paper Abstract

An RF plasma jet generator of singlet delta oxygen has been developed for use in an oxygen-iodine laser. The plasma jet was produced in an Al cylindrical nozzle, having the inner diameter of 3 mm and the length of 8 mm. The discharge was done in the gas mixture O2:N2:NO=200:20:10 sccm and then it was chilled reactively by the mixture Ar:NO2=200:10 sccm, which was injected into the plasma jet at the nozzle exit. The RF frequency was 99.9 MHz and the RF power was 200 W. The O2(?1Æg) relative yield of 32 % was achieved at the pressure of 0.43 Torr. The current device DSOG-3 was tested in a discharge oxygen-iodine laser (DOlL). The reaction scheme of DOlL is the same as in COIL, except of the generator of singlet delta oxygen. The pressure inside the laser was 0.6-0.9 Torr and the mixtures O2:NO=200: 100 sccm and Ar:NO=2100: 100 sccm were used. The iodine flow rate was 0.3 mmol/min. Both types axial and transverse subsonic flow lasers were examined. The latter had better performance. The CW output power was 3 nW at the laser wavelength of 13 15 nm, when the yield of O2(?1Æg) was 25%. The RF DOlL has been demonstrated experimentally.

Paper Details

Date Published: 25 January 2001
PDF: 4 pages
Proc. SPIE 4184, XIII International Symposium on Gas Flow and Chemical Lasers and High-Power Laser Conference, (25 January 2001); doi: 10.1117/12.414080
Show Author Affiliations
Josef Schmiedberger, Nagaoka Univ. of Technology (Japan)
Shinichi Hirahara, Nagaoka Univ. of Technology (Japan)
Yasuhiro Ichinohe, Nagaoka Univ. of Technology (Japan)
Masataro Suzuki, Nagaoka Univ. of Technology (Japan)
Wataru Masuda, Nagaoka Univ. of Technology (Japan)
Yoshihumi Kihara, Anan College of Technology (Japan)
Eiji Yoshitani, Fujisaki Electric Co. Ltd. (Japan)
Hiroo Fujii, Anan College of Technology (Japan)

Published in SPIE Proceedings Vol. 4184:
XIII International Symposium on Gas Flow and Chemical Lasers and High-Power Laser Conference
Antonio Lapucci; Marco Ciofini, Editor(s)

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