Abstract
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 -33% was obtained in a 5 cm gain length for Cl2 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.
| Original language | English |
|---|---|
| Article number | 97 |
| Pages (from-to) | 282-293 |
| Number of pages | 12 |
| Journal | Proceedings of SPIE - The International Society for Optical Engineering |
| Volume | 5448 |
| Issue number | PART 1 |
| DOIs | |
| State | Published - 1 Dec 2004 |
| Event | High-Power Laser Ablation V - Taos, NM, United States Duration: 25 Apr 2004 → 30 Apr 2004 |
Keywords
- Chemical lasers
- Iodine
- Oxygen
- Power lasers
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Computer Science Applications
- Applied Mathematics
- Electrical and Electronic Engineering