High-power waveguide laser

Abstract From the Canadian patent

A b s t r a c t, In order to improve an electrically excited diffusion-cooled high-, power laser comprising two wall surfaces slightly spaced from one another and forming an optical waveguide the width of the wall, surfaces being a multiple of the space between them and the surfaces enclosing between them a flow-free discharge chamber and also, comprising an optical resonator having resonator mirrors disposed at both ends of said waveguide, such that this results in a laser beam which can be well focused, it is suggested that the resonator be an optically unstable resonator including a beam path extending lengthwise of a resonator axis and having an expansion transverse to the resonator …