Numerical modeling of spatio-temporal dynamics of gas discharge plasma parameters in recombination lasers
Abstract
Numerical modeling of spatio-temporal dynamics of gas discharge plasma parameters in recombination lasers
Incoming article date: 12.07.2025The spatio-temporal dynamics of plasma parameters was numerically investigated, and the radiation parameters were calculated for a strontium vapor laser (λ=430.5 nm SrII) under optimal conditions of active medium pumping, which we found experimentally. The analysis of the obtained results showed that under the conditions of excitation of a pulse-periodic discharge in the active element, which provide the maximum pumping rate of SrII levels due to impact-radiation recombination, a sufficiently high degree of spatial homogeneity of plasma in the active medium is realized, which is necessary to achieve high output parameters of laser radiation. Such conditions include the partial pressures of the components of the Sr-He working mixture, the pulsed energy input into the active medium, and the pulse repetition rate. The research results can serve as a guideline for optimizing the operating modes of recombination lasers.
Keywords: strontium vapor laser, recombination pumping, numerical modeling, optimization