Advanced Diagnostics for COIL and DOIL

Steven J. Davis; W. Terry Rawlins; Seonkyung Lee; Michelle L. Silva; William J. Kessler; Phillip A. Mulhall

doi:10.1117/12.548814

20 September 2004 Advanced Diagnostics for COIL and DOIL

Steven J. Davis, W. Terry Rawlins, Seonkyung Lee, Michelle L. Silva, William J. Kessler, Phillip A. Mulhall

Proceedings Volume 5448, High-Power Laser Ablation V; (2004) https://doi.org/10.1117/12.548814
Event: High-Power Laser Ablation, 2004, Taos, New Mexico, United States

Abstract

In this paper we discuss the application of sensitive, non-intrusive diagnostic techniques to characterize species in the flow that are critical for chemical oxygen iodine laser (COIL) devices and the electric discharge oxygen iodine laser (DOIL) concept. The key diagnostics include chemiluminescence to detect O₂(a,b) and I(²P_1/2) and tunable diode laser absorption measurements of I* and temperature. We have characterized variations in O and O₂(a) yields with discharge power and oxygen mole fraction. We observe O₂(a) yields to increase dramatically with decreasing oxygen mole fraction. We also discuss the application of a novel imaging diagnostic to obtain 2-D images of species concentrations and temperature.

Citation Download Citation

Steven J. Davis, W. Terry Rawlins, Seonkyung Lee, Michelle L. Silva, William J. Kessler, and Phillip A. Mulhall "Advanced Diagnostics for COIL and DOIL", Proc. SPIE 5448, High-Power Laser Ablation V, (20 September 2004); https://doi.org/10.1117/12.548814

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