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

B. D. Barmashenko, V. Rybalkin, A. Katz, S. Rosenwaks

Research output: Contribution to journalConference articlepeer-review

7 Scopus citations


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 languageEnglish
Article number97
Pages (from-to)282-293
Number of pages12
JournalProceedings of SPIE - The International Society for Optical Engineering
Issue numberPART 1
StatePublished - 1 Dec 2004
EventHigh-Power Laser Ablation V - Taos, NM, United States
Duration: 25 Apr 200430 Apr 2004


  • 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


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