Effect of the He-Ne Laser Population Inversion Dependence on its Transverse Dimensions on the Radiation Power

The authors have earlier proposed a calculating method for the emission power of a He-Ne laser with the active element of arbitrary geometry. In this paper, this method is improved by taking into account the dependence of the population inversion on the tube axis on the transverse dimensions of the tube. This dependence has been obtained from the positive discharge column model developed by the authors for the laser tubes of smoothly varying diameter. The numerical calculations (computer simulation) results correspond to the experimental data.