Influence of transit effects on frequency resonances in gas lasers

An investigation is made of the influence of the transit effects and of the wavefront curvature of a Gaussian mode on the characteristics of a frequency resonance of a linear gas laser with an intracavity absorption cell. It is shown that these effects do not shift a resonance from the central frequency of the spectral line of the gas in the absorption cell. A study is made of the influence of geometric parameters representing the position of the cell relative to the neck of a Gaussian mode on the frequency resonance profile.