11 May 2004 Spatially resolved sub-Doppler overtone gain measurements on a small-scale supersonic HF laser
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Proceedings Volume 5334, Gas and Chemical Lasers, and Applications III; (2004) https://doi.org/10.1117/12.537755
Event: Lasers and Applications in Science and Engineering, 2004, San Jose, Ca, United States
Abstract
The small signal gain of a small-scale HF overtone laser was measured using a sub-Doppler tunable diode laser system. Measurements of reactant concentration, flow velocity and gain length were also made. The spatially resolved, two-dimensional small signal gain and temperature 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 and temperature 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.
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Charles F. Wisniewski, Charles F. Wisniewski, Kevin B. Hewett, Kevin B. Hewett, Gerald C. Manke, Gerald C. Manke, C. Randall Truman, C. Randall Truman, Gordon D. Hager, Gordon D. Hager, } "Spatially resolved sub-Doppler overtone gain measurements on a small-scale supersonic HF laser", Proc. SPIE 5334, Gas and Chemical Lasers, and Applications III, (11 May 2004); doi: 10.1117/12.537755; https://doi.org/10.1117/12.537755
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