The singly ionized krypton ion laser

Basic data on the Kr+ laser such as the population densities, pumping rates, lifetimes, etc., of all the upper laser states and those states that contribute significantly to the populations of these upper laser states have been obtained. These results were obtained on the basis of the calculated Einstein coefficients and the measured spontaneous emission data for the Kr+ laser discharge. The implications of these results on the further development and the characteristics of the Kr+ laser are also discussed in some detail. It is shown, for example, that the Kr+ laser is potentially capable of producing substantial amounts of CW laser power in the red at current levels below the threshold of the Kr+ discharge instability.