Characteristics Of A 1-Kw Electric Discharge CW CO Laser

Shunichi Sato; Kunimitsu Takahashi; Hideaki Saito; Tomoo Fujioka; Riichi Yoshikawa; Shizuma Kuribayashi

doi:10.1117/12.950510

20 June 1989 Characteristics Of A 1-Kw Electric Discharge CW CO Laser

Shunichi Sato, Kunimitsu Takahashi, Hideaki Saito, Tomoo Fujioka, Riichi Yoshikawa, Shizuma Kuribayashi

Proceedings Volume 1031, 7th Intl Symp on Gas Flow and Chemical Lasers; (1989) https://doi.org/10.1117/12.950510
Event: 7th International Symposium on Gas Flow and Chemical Lasers, 1988, Vienna, Austria

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.

Citation Download Citation

Shunichi Sato, Kunimitsu Takahashi, Hideaki Saito, Tomoo Fujioka, Riichi Yoshikawa, and Shizuma Kuribayashi "Characteristics Of A 1-Kw Electric Discharge CW CO Laser", Proc. SPIE 1031, 7th Intl Symp on Gas Flow and Chemical Lasers, (20 June 1989); https://doi.org/10.1117/12.950510

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