Abstract
Detailed time-correlated gain, flourescence, and laser energy measurements were used to obtain quantitative data on energy extraction efficiencies for a photoionization-stabilized self-sustained XeF laser. A current pulse of 25 ns full width at half-maximum produced an 80-cm3 XeF plasma in NF3 : Xe : He gas mixtures with a maximum output energy of 80 mJ. The results show that the maximum small-signal gain and the maximum specific output energy is proportional to the NF3 content of the gas mixture. This suggests that there is an optimum fractional utilization of the NF3 molecules in the discharge. Under high-gain conditions, 30–40% of the energy stored in XeF* can be extracted in a gain-switched pulse. The output energy represents less than 1% of the input energy.
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