Modeling of active medium of a laser on metastable argon atoms with dual-frequency optical pumping with bleaching of the pump and lasing transitions

The results of modeling the active medium of an optically pumped metastable argon atom laser are presented. Auxiliary pumping at a wavelength different from the primary pump is used to compensate for losses due to spontaneous emission. The primary pumping occurs at a wavelength of 811.5 nm, and the auxiliary pumping occurs at 810.4 nm. The choice of the auxiliary pumping transition is due to its strong absorption and its wavelength proximity to the primary pumping wavelength, which simplifies the fabrication of a diode pump source. Modeling showed that using auxiliary pumping significantly increases the maximum possible specific laser output power by an order of magnitude.