INTERACTION MECHANISMS OF LASER TRANSITIONS IN ARGON AND KRYPTON ION LASER

Abstract

A mechanism is proposed to explain anomalous interaction effects between laser lines in Ar⁺ and Kr⁺. Radiative transitions connecting the upper level of the directly modulated laser line and the lower level of the cross‐modulated line are responsible for the anomalous behavior. This mechanism is supported by the presence or the absence of reciprocity in the anomalous interaction related with the presence or the absence of oscillation on the connecting transition, by the strong ``out‐of‐phase'' cross modulation on the connecting transition, and by the lack of upper‐level pumping processes suitable for explaining the anomalous interaction.