Lumped element resonator for use in gas laser microwave excitation

A new microwave-exciting scheme useful for gas laser, especially for CO2 slab lasers is offered. A lumped circuit resonator like loop-gap resonator gives opportunity to get extremely homogeneous electromagnetic field and therefore a homogeneous discharge for gas laser application, narrow discharge gap and easy matching a microwave source and resonator. The some physical and the associated technical problems of the transverse microwave discharge for an excitation of diffusion cooled gas laser are discussed.