| Issue |
J. Phys. Colloques
Volume 41, Number C9, Novembre 1980
Third International Symposium on Gas-Flow and Chemical Lasers
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|---|---|---|
| Page(s) | C9-203 - C9-207 | |
| DOI | https://doi.org/10.1051/jphyscol:1980926 | |
Third International Symposium on Gas-Flow and Chemical Lasers
J. Phys. Colloques 41 (1980) C9-203-C9-207
DOI: 10.1051/jphyscol:1980926
First Research Center Japan Defense Agency, Nakameguro, 2-2-1, Meguro, Tokyo, Japan.
J. Phys. Colloques 41 (1980) C9-203-C9-207
DOI: 10.1051/jphyscol:1980926
THE HIGH GAIN CO2 LASER BY EFFECTIVE MIXING OF N2 AND CO2 GAS
H. Hara et A. FujisawaFirst Research Center Japan Defense Agency, Nakameguro, 2-2-1, Meguro, Tokyo, Japan.
Abstract
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.