Svitlichnyi Y. Lasers on selfterminating transitions of copper and calcium atoms with modified kinetics

This work is devoted to the experimental study of the influence of metal additives on the output characteristics of the laser on a copper vapor laser (CVL), as well as the simulation of simultaneous generation in the laser at atomic and ionic selfterminating transitions in order to improve their output characteristics. A detailed experimental study of emission, spectral, temporal and energy characteristics of the influence of zinc impurities on the generating properties of a laser on a copper vapor was performed for the first time. It is shown that the introduction into the working zone of a laser a zinc atom in the temperature range 300 - 600 °C increases the generation pulse energy by 2 times, and also reduces the energy required for its excitation by 21.5% and increases the efficiency of the CVL. On the basis of the thorough analysis and generalization of the results of experimental investigation of various mechanisms of action of metal atoms additives on the basic parameters of a laser on copper vapors, a single mechanism of their influence is proposed and grounded. Its essence consists in correction of thermophysical parameters in elastic collisions of electrons with atoms of each component of the working mixture/ For the first time numerical simulation of simultaneous pumping of atomic and ionic laser levels at self-limiting calcium transitions was performed. In the approximation of the saturated power, general solutions are obtained for kinetic equations for the dependence of the population of the upper laser levels of the atom and the ion on the electron concentration.