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Proceedings Paper

Characteristics Of A 1-Kw Electric Discharge CW CO Laser
Author(s): Shunichi Sato; Kunimitsu Takahashi; Hideaki Saito; Tomoo Fujioka; Riichi Yoshikawa; Shizuma Kuribayashi
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Paper Abstract

Performance characteristics of a 1-kW transverse self-sustaind discharge-excited cw CO laser with a closed-loop subsonic flow are reported. Discharge and laser characteristics have been measured as a function of gas flow rate in a range of 10-37 m/sec. The measurements show that maximum discharge power loading drastically increases as the flow rate increases. Under the same cavity conditions, however, the output decreases rather than increases as the flow rate increases. From a discharge volume of about 480 cm3 the maximum laser output of 1250 W has been obtained with an electrical conversion efficiency of 26.6 % for a mixture of CO/N./He/02=6/16/78/0.05 (%) at a gas flow rate of 25 m/sec. The gas pressure and the entrance gas temperature are 40 Torr and 175 K, respectively. It has been also made clear that high-power,efficient operation can be achieved even at relatively high temperatures by increasing discharge input density. For a higher pressure of 50 Torr the output of 1180 W has been obtained with a conversion efficiency of 21.9 % at a temperature of 193 K.

Paper Details

Date Published: 20 June 1989
PDF: 4 pages
Proc. SPIE 1031, 7th Intl Symp on Gas Flow and Chemical Lasers, (20 June 1989); doi: 10.1117/12.950510
Show Author Affiliations
Shunichi Sato, Industrial Research Institute (Japan)
Kunimitsu Takahashi, Industrial Research Institute (Japan)
Hideaki Saito, Industrial Research Institute (Japan)
Tomoo Fujioka, Industrial Research Institute (Japan)
Riichi Yoshikawa, Mitsubishi Heavy Industries, Ltd. (Japan)
Shizuma Kuribayashi, Mitsubishi Heavy Industries, Ltd. (Japan)

Published in SPIE Proceedings Vol. 1031:
7th Intl Symp on Gas Flow and Chemical Lasers
Dieter Schuoecker, Editor(s)

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