Design and performance of an atmospheric pressure HF chemical laser

D. Chuchem; Yehoshua Y. Kalisky; M. Amit; Israel Smilanski

doi:10.1117/12.25991

1 February 1991 Design and performance of an atmospheric pressure HF chemical laser

D. Chuchem, Yehoshua Y. Kalisky, M. Amit, Israel Smilanski

Proceedings Volume 1397, 8th Intl Symp on Gas Flow and Chemical Lasers; (1991) https://doi.org/10.1117/12.25991
Event: Eighth International Symposium on Gas-Flow and Chemical Lasers, 1990, Madrid, Spain

Abstract

Performance and design of an atmospheric-pressure, corona-preionized pulsed HF laser is presented. The preionization was achieved by means of a "plasma cathode". Two types of lasers were investigated: A short laser with effective screen area of 50 x 7 mm2, and a long laser with an effective screen area of 100 x 7 mm2. A grounded flat aluminum anode with rounded edges was placed 7 mm from the screen electrode in the short laser and at various gaps (5.8-8.3 mm) in the long laser, thus forming effective discharge volumes of 2.45 cm3 and 3.6 - 5.2 cm3, respectively. The SF6:H2:He gas ratios employed were: 7:2:91 and 5:2:93. Output pulses of up to 40 mJ energy were achieved. Electrical efficiencies up to 2.5% were obtained at about 8 mJ per cm3. The influence of the gas pressure, air contamination, the capacitor ratio and output coupling reflectivity on the laser performance was measured.

Citation Download Citation

D. Chuchem, Yehoshua Y. Kalisky, M. Amit, and Israel Smilanski "Design and performance of an atmospheric pressure HF chemical laser", Proc. SPIE 1397, 8th Intl Symp on Gas Flow and Chemical Lasers, (1 February 1991); https://doi.org/10.1117/12.25991

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