A long-pulse high-energy CO 2 laser pumped by an ultraviolet-sustained electric discharge
1974
A UV-sustained electric-discharge CO 2 laser has demonstrated optical energy-density extraction and long-pulse performance competitive with current e -beam sustained devices. Atmospheric-pressure CO 2 -N 2 -He mixtures seeded with tri-n-propylamine are volumetrically photoionized using the 1200-1700-A radiation from a spark-array source. Laser pulse lengths up to 37 μs have been achieved with a specific energy of 47 J/1.atm. The best specific energy demonstrated was 60 J/1.atm in a 23-μs pulse.
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