Abstract
Output energy of a discharge-pumped F2 molecular laser has been greatly increased by an extremely intense excitation in a sufficiently high-pressure laser gas mixture. The maximum vacuum ultraviolet output energy was 112 mJ for an 8 atm laser gas mixture, which is almost an order of magnitude larger than that obtained so far with discharge devices. The peak power deposition into the discharge plasma was estimated to be 23 MW/cm3 for the maximum output energy. Use of a short electrode spacing was found to be effective to increase the output energy.
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