Hydrogen fluoride overtone laser: 2D CFD modeling of the small signal gain

Charles F. Wisniewski; Kevin B. Hewett; Gerald C. Manke II; C. Randall Truman; Gordon D. Hager

doi:10.1117/12.547089

20 September 2004 Hydrogen fluoride overtone laser: 2D CFD modeling of the small signal gain

Charles F. Wisniewski, Kevin B. Hewett, Gerald C. Manke II, C. Randall Truman, Gordon D. Hager

Proceedings Volume 5448, High-Power Laser Ablation V; (2004) https://doi.org/10.1117/12.547089
Event: High-Power Laser Ablation, 2004, Taos, New Mexico, United States

Abstract

The small signal gain of a small-scale HF overtone laser was measured using a sub-Doppler tunable diode laser system. The spatially resolved, two-dimensional small signal gain maps that were generated show a highly inhomogeneous gain medium indicating the dominant role played by mixing of the H₂ and F streams in HF laser performance. The measured gain data were analyzed with the aid of a two-dimensional computational fluid dynamics model. The results show that reactant mixing mechanisms have a large effect on the gain averaged over a vertical profile while kinetic rate mechanisms, including reaction rate constants and reactant concentration, have a greater effect on the maximum system gain.

Citation Download Citation

Charles F. Wisniewski, Kevin B. Hewett, Gerald C. Manke II, C. Randall Truman, and Gordon D. Hager "Hydrogen fluoride overtone laser: 2D CFD modeling of the small signal gain", Proc. SPIE 5448, High-Power Laser Ablation V, (20 September 2004); https://doi.org/10.1117/12.547089

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