METHOD FOR PUMPING IN GAS-DISCHARGE PULSE LASERS Russian patent published in 2023 - IPC H01S3/225 

FIELD: quantum electronics.

SUBSTANCE: invention relates to quantum electronics; it can be used in creation of electric-discharge excimer and other lasers with specific pumping power of 3-10 MW/cm³. The method is based on ignition in lasers of a diffuse discharge in dense gas mixtures with electronegative components, consisting of a self-organizing structure of multiple diffuse channels. Formation of multiple equilibrium diffuse channels is provided due to a speed of current density growth dj/dt of more than 6×10¹⁰ A/cm²×sec and reduced field strength at the moment of break of a discharge gap of at least E/P ~ 3 kV/cm×atm. A completed or uncompleted stage of development of diffuse channels in the discharge is determined by the ratio of concentrations of gas mixture components serving as a donor and an acceptor for electrons in plasma.

EFFECT: provision of ignition of stable multichannel diffuse plasma with a concentration of electrons of up to -1×10¹⁶ cm^-3 in dense gas media including electronegative additives, while saving properties of an active medium during the entire duration of a pumping pulse, having an oscillatory form of discharge current.

3 cl, 2 dwg