TA4 - Characteristics of a high-energy hydrogen fluoride (HF) laser initiated by an intense electron beam
- 1 August 1975
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Journal of Quantum Electronics
- Vol. 11 (8), 642-648
- https://doi.org/10.1109/jqe.1975.1068684
Abstract
The characteristics of a high-energy hydrogen fluoride (HF) laser and the effects of optical elements on beam quality and on energy extraction are described. The HF laser is initiated by injecting a 2-MeV electron beam into a mixture of SF6and C2H6. With 300-torr SF6and 30-torr C2H6, the radiated energy with a flat mirror on one end of the laser cell is ≈80 percent of the two-way energy when no mirrors are used. The effect of a confocal unstable resonator in providing collimation of the laser beam was studied. The maximum laser energy measured was 380 J in a 23-ns full width at half maximum (FWHM) pulse. The maximum electrical efficiency measured was 14 percent, which is about 60 percent of the maximum theoretical value.Keywords
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