Quantitative determination of oxygen yield in a chemical oxygen-iodine laser

Kip R. Kendrick; Charles A. Helms; Brian Quillen; R. J. Copland

doi:10.1117/12.308058

12 May 1998 Quantitative determination of oxygen yield in a chemical oxygen-iodine laser

Kip R. Kendrick, Charles A. Helms, Brian Quillen, R. J. Copland

Proceedings Volume 3268, Gas and Chemical Lasers and Intense Beam Applications; (1998) https://doi.org/10.1117/12.308058
Event: Optoelectronics and High-Power Lasers and Applications, 1998, San Jose, CA, United States

Abstract

With the advent of the Airborne Laser program, the emphasis of chemical oxygen-iodine laser (COIL) research has shifted toward improving the overall efficiency. A key component of COIL is the singlet-oxygen generator (SOG). To asses the efficiency of the SOG an accurate method of determining the yield of O₂((alpha) ¹(Delta) _g),[O₂((alpha) ¹(Delta) _g)]/[O₂(total)] where [O₂(total)]equals[O₂((alpha) ¹(Delta) _g)]+[O₂(X³(Sigma) _g^-)], has been developed. Absorption measurements of ground-state oxygen utilizing the magnetic-dipole transition, O₂(X³(Sigma) _g^-) at 763 nm, have been obtained using a diode laser in conjunction with a multiple-pass Herriot-cell on a 10 kW class supersonic SOIL (RADICL). When RADICL is configured with a 0.35' throat, 15' diskpack, and a medium volume transition duct, with a diluent ratio (He:O₂) of 3:1, the yield of O₂((alpha) ¹(Delta) _g) in the diagnostic duct is 0.41 +/- 0.02.

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Kip R. Kendrick, Charles A. Helms, Brian Quillen, and R. J. Copland "Quantitative determination of oxygen yield in a chemical oxygen-iodine laser", Proc. SPIE 3268, Gas and Chemical Lasers and Intense Beam Applications, (12 May 1998); https://doi.org/10.1117/12.308058

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