COIL performance modeling and recent advances in diagnostic measurements

Keith A. Truesdell; Charles A. Helms; S. Frerking; Gordon D. Hager; David N. Plummer; Richard J. Copland

doi:10.1117/12.270162

4 April 1997 COIL performance modeling and recent advances in diagnostic measurements

Keith A. Truesdell, Charles A. Helms, S. Frerking, Gordon D. Hager, David N. Plummer, Richard J. Copland

Proceedings Volume 3092, XI International Symposium on Gas Flow and Chemical Lasers and High-Power Laser Conference; (1997) https://doi.org/10.1117/12.270162
Event: XI International Symposium on Gas Flow and Chemical Lasers and High Power Laser Conference, 1996, Edinburgh, United Kingdom

Abstract

This paper describes the analysis of power extraction from a chemical oxygen iodine laser (COIL) using a simplified saturation model (SSM). Previously our COIL modeling efforts have been limited by an inability to accurately measure O₂(¹(Delta) ) concentrations which in turn is a measure of the power available in the laser. Earlier application of the SSM to RotoCOIL data implied that our measured O₂(¹(Delta) ) could not be correct. In this paper we show how a new method for experimentally inferring O₂(¹(Delta) ) by measuring O₂(³(Sigma) ) leads to better agreement between experiment and theory. These results strongly imply that if a COIL model is anchored to literature O₂(¹(Delta) ) measurements, caution needs to be applied when using the model for predicting performance.

Citation Download Citation

Keith A. Truesdell, Charles A. Helms, S. Frerking, Gordon D. Hager, David N. Plummer, and Richard J. Copland "COIL performance modeling and recent advances in diagnostic measurements", Proc. SPIE 3092, XI International Symposium on Gas Flow and Chemical Lasers and High-Power Laser Conference, (4 April 1997); https://doi.org/10.1117/12.270162

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