Gain diagnostic in a supersonic COIL with transonic injection of iodine

S. Rosenwaks, D. Furman, E. Bruins, B. D. Barmashenko

Research output: Contribution to conferencePaperpeer-review

1 Scopus citations


Measurements of die gain and temperature in the resonator of a supersonic chemical oxygen-iodine laser (COIL) with transonic injection of I2, using diode laser based diagnostics, are reported. The measurements were carried out for a grid nozzle and two slit nozzles with different number and diameters of injection holes. Maximum gain of 0.54%/cm was obtained for a slit nozzle with the same total cross section of the injection holes as for the grid nozzle (for the later the maximum gain was only 0.34%/cm). The gain is found to be nonmonotonous function of the iodine flow rate, whereas the temperature increases with increasing iodine flow. The gain also increases with increasing O2(1Δ) yield. The measured temperatures in the resonator corresponding to the maximum gain are rather high (> 300 K).

Original languageEnglish
StatePublished - 1 Jan 1999
Event30th Plasmadynamic and Lasers Conference, 1999 - Norfolk, United States
Duration: 28 Jun 19991 Jul 1999


Conference30th Plasmadynamic and Lasers Conference, 1999
Country/TerritoryUnited States

ASJC Scopus subject areas

  • Engineering (all)


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