A 33% efficient chemical oxygen–iodine laser with supersonic mixing of iodine and oxygen

Rybalkin, V.; Katz, A.; Barmashenko, B. D.; Rosenwaks, S.
June 2003
Applied Physics Letters;6/2/2003, Vol. 82 Issue 22, p3838
Academic Journal
We report on a highly efficient supersonic chemical oxygen–iodine laser (COIL), with supersonic mixing of iodine and oxygen. Output power exceeding 0.5 kW with chemical efficiency of ∼33% was obtained in a 5-cm gain length for Cl[sub 2] flow rate of 17 mmole/s. A 33% efficiency is the highest reported chemical efficiency of any supersonic COIL. Comparison between different mixing schemes shows that, for supersonic mixing, the output power and chemical efficiency are about 20% higher than for transonic mixing scheme. The optimal conditions for the efficient operation are investigated. © 2003 American Institute of Physics.


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