TY - JOUR
T1 - Parametric study of a highly efficient chemical oxygen-iodine laser with supersonic mixing of iodine and oxygen
AU - Rybalkin, V.
AU - Katz, A.
AU - Barmashenko, B. D.
AU - Rosenwaks, S.
N1 - Funding Information:
Effort sponsored by the Air Force Office of Scientific Research, Air Force Material Command, USAF, under Grant No. FA8655-04-1-3031.
PY - 2005/7/15
Y1 - 2005/7/15
N2 - We report on a detailed parametric study of the extremely efficient supersonic chemical oxygen-iodine laser recently developed in our laboratory [V. Rybalkin, A. Katz, B. D. Barmashenko, and S. Rosenwaks, Appl. Phys. Lett. 85, 5851 (2004)]. At the early stage of operation, 40.0% efficiency was measured for 1 s followed by a sustained 35.5% chemical efficiency for 20 s. The power and spatial distributions of the gain and temperature across the flow were measured for different supersonic nozzles with both staggered and nonstaggered iodine injection holes, different injection locations along the flow and nozzle throat heights. The effects of the partial pressure of O2 and the residence time of the flow in the generator, as well as the heating of the nozzle, are discussed and shown to be crucial in attaining this high efficiency. By carefully studying and optimizing the operation of the chemical generator, 0.73 yield of singlet oxygen was obtained for conditions corresponding to the highest efficiency.
AB - We report on a detailed parametric study of the extremely efficient supersonic chemical oxygen-iodine laser recently developed in our laboratory [V. Rybalkin, A. Katz, B. D. Barmashenko, and S. Rosenwaks, Appl. Phys. Lett. 85, 5851 (2004)]. At the early stage of operation, 40.0% efficiency was measured for 1 s followed by a sustained 35.5% chemical efficiency for 20 s. The power and spatial distributions of the gain and temperature across the flow were measured for different supersonic nozzles with both staggered and nonstaggered iodine injection holes, different injection locations along the flow and nozzle throat heights. The effects of the partial pressure of O2 and the residence time of the flow in the generator, as well as the heating of the nozzle, are discussed and shown to be crucial in attaining this high efficiency. By carefully studying and optimizing the operation of the chemical generator, 0.73 yield of singlet oxygen was obtained for conditions corresponding to the highest efficiency.
UR - http://www.scopus.com/inward/record.url?scp=23844557234&partnerID=8YFLogxK
U2 - 10.1063/1.1988969
DO - 10.1063/1.1988969
M3 - Article
AN - SCOPUS:23844557234
SN - 0021-8979
VL - 98
JO - Journal of Applied Physics
JF - Journal of Applied Physics
IS - 2
M1 - 023106
ER -