Energy characteristics of a supersonic CO chemical laser

Chemical co lasers based on carbon-disulfide flame

“…When the structure of the nozzle assembly was modified and another source of active centers was used, it became possible to improve significantly the energetic and specific characteristics of the yield of laser radiation. The results obtained were reported in [19,20]. Noteworthy also are other methods for the active-center generation that were used to provide the operating conditions for chemical CO lasers in the mode of supersonic flow of a reactive mixture.…”

“…The addition of the products of combustion of sulfur to the carbon disulfide flame in the case of subsonic velocities of the gas flow causes the yield of laser radiation to increase. The use of products of sulfur combustion also yielded good results for a supersonic chemical CO laser (see [20]). The influence of products of sulfur combustion on initiation of the chemical reaction downstream from the nozzle was also studied for supersonic velocities of the reactant-mixture flow; the addition of these products made it possible to realize the laser radiation in the framework of a low-consumption model [27].…”

“…The chemical efficiency in these experiments was somewhat higher (about 8 %). In a supersonic laser using sulfur vapors [20], measurements of the laser-radiation power in a closed resonator yielded 22 J/g for the specific energy output and 13 % for the chemical efficiency. In the studies where carbon disulfide was preliminarily dissociated in shock tubes [24,27], a pulsed laser emission from CO was also observed; however, the modest energetic characteristics of the laser-radiation output apparently prevented the authors from reporting concrete data making it possible to evaluate the specific energy output.…”