Stimulated-emission cross section and inversion lifetime in a three-atmosphere iodine photodissociation laser

An iodine photodissociation laser has been operated at three atmospheres by adding an inert gas to the laser medium. With three atmospheres of helium added a stimulated-emission cross section of
2 \times 10^{-19}
cm
²
and an inversion half-life of 110 μs was observed.