Abstract
Pulsed laser oscillation in atomic fluorine at 7039, 7129, and 7024 Å (vacuum) has been observed and identified as belonging to the 3p 2P – 2s2P transitions in fluorine I. Emission originates from an electrically pulsed CF4, C2F6, or SF6 and helium mixture with pressure of 0.1 and 5 Torr, respectively. Optical pulse duration is 1–2μsec with a peak power in all three lines of 150 W. Laser action takes place in a 4-m cavity with active discharge lengths from 1 to 3 m.
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