J. Phys. Colloques
Volume 41, Numéro C9, Novembre 1980Third International Symposium on Gas-Flow and Chemical Lasers
|Page(s)||C9-203 - C9-207|
J. Phys. Colloques 41 (1980) C9-203-C9-207
THE HIGH GAIN CO2 LASER BY EFFECTIVE MIXING OF N2 AND CO2 GASH. Hara et A. Fujisawa
First Research Center Japan Defense Agency, Nakameguro, 2-2-1, Meguro, Tokyo, Japan.
A high-gain CO2 laser is described in which vibrationally excited N2 gas and cold CO2 gas are mixed effectively by means of the diffusion of CO2 gas into N2 gas. By using different types of mixing techniques, a maximum gain of 11 m-1 was obtained when CO2 gas was injected parallel to the expanding N2 gas flow. An output power of 4 W was obtained from an 1.2 cm active length. In addition, He gas addition to the N2 gas flow was found to decrease the small-signal gain with increasing He gas flow rate.