Parametric study of the Ben-Gurion University efficient chemical oxygen-iodine laser

被引：2
|
作者：
Barmashenko, BD [1 ]
Rybalkin, V [1 ]
Katz, A [1 ]
Rosenwaks, S [1 ]
机构：
[1] Ben Gurion Univ Negev, Dept Phys, IL-84105 Beer Sheva, Israel
来源：
HIGH-POWER LASER ABLATION V, PTS 1 AND 2 | 2004年 / 5448卷
关键词：
chemical lasers; oxygen; iodine; power lasers;
D O I：
10.1117/12.548150
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We report on a detailed parametric study of an extremely efficient supersonic chemical oxygen-iodine laser (COIL) with supersonic mixing of iodine and oxygen. Output power exceeding 0.5 kW with chemical efficiency of similar to33% was obtained in a 5 cm gain length for Cl-2 flow rate of 17 mmole/s. 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. Diagnostic measurements of the small-signal gain shows that the value of the gain for the supersonic mixing scheme corresponding to the maximum efficiency is about 0.75%/cm, about 1.5 times larger than for transonic mixing scheme. Studies of different supersonic mixing schemes show that to achieve further power increase the injection location should be moved downstream.
引用
收藏
页码：282 / 293
页数：12
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