High-efficiency chemical oxygen–iodine laser using a streamwise vortex generator

Endo, Masamori; Osaka, Tatsuo; Takeda, Shuzaburo
April 2004
Applied Physics Letters;4/19/2004, Vol. 84 Issue 16, p2983
Academic Journal
A supersonic expansion nozzle has allowed us to achieve highly efficient operation of the supersonic mixing chemical oxygen–iodine laser (COIL). The nozzle’s shape produced a rapid mixing of the primary and secondary flows. Made up of a series of thin alternating wedges placed adjacent to each other, the nozzle looks like the letter X when it is viewed from the side. Iodine is injected at the exit plane of the nozzle and is strongly entrained by the streamwise vortices generated by the nozzle. 599 W of output power with a chemical efficiency of 32.9% is obtained, values higher by a factor of 1.4 than those of the conventional COIL. © 2004 American Institute of Physics.


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