3 February 2015 Research on COIL employing no-flake-nozzle and CO2 as buffer gas
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Proceedings Volume 9255, XX International Symposium on High-Power Laser Systems and Applications 2014; 925526 (2015) https://doi.org/10.1117/12.2065089
Event: XX International Symposium on High Power Laser Systems and Applications, 2014, Chengdu, China
Abstract
The supersonic nozzles lower temperature to 170-180 K better for the small signal gain coefficient. But at this temperature, the CO2 buffer gas may become liquid state. A chemical oxygen-iodine laser (COIL) employing CO2 as buffer gas and no-flake-nozzle was studied. Some mathematical simulation in three-dimensional computation fluid dynamics was adopted first to validate its usability. New nozzles gave the temperature higher than 400 K and considerable small signal gain coefficient. In the same conditions as simulation, experiments gave a 23% of chemical efficiency and 2.5 kW of output power. And it have got rid of “black area”, which was familiar in the supersonic COIL both in simulation and experimental results.
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Mingxiu Xu, Fengting Sang, Yuelong Zhang, Benjie Fang, Yuqi Jin, "Research on COIL employing no-flake-nozzle and CO2 as buffer gas", Proc. SPIE 9255, XX International Symposium on High-Power Laser Systems and Applications 2014, 925526 (3 February 2015); doi: 10.1117/12.2065089; https://doi.org/10.1117/12.2065089
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