Double-resonance spectroscopy in gas lasers

The general theory of double resonance in gas lasers is used to deduce analytic expressions for the intensity of a laser oscillating on a to atomic transition, and experimental data on the transition in the He-Ne laser are reported. Phenomenological modification of the theory is introduced to account for the pronounced effect of collision broadening upon double resonance. Atomic parameters of the level of neon are obtained by comparison between theory and experiment. The collision-dependent decay rates introduced in the theory are also obtained, and the functional dependence of the theory upon the decay rates is examined.