Some features of formation of the angular spectrum of the stimulated radiation emitted from iodine laser

The geometric-optics approximation is used to analyze theoretically the formation of the angular spectrum of the radiation emitted by an iodine laser, relationship between optical inhomogeneities and internal losses, and the influence of the stray scattering noise on the mode composition of the radiation. The threshold conditions are found allowing for optical inhomogeneities in the active medium. It is shown that the presence of such inhomogeneities simply bends the phase front of the radiation without altering its brightness.