Frequency-converting laser device

Abstract

A frequency-converting laser device that is efficient but at the same time has a simple structure contains an optical resonator that has two resonator mirrors, specifically a coupling-out mirror and an end mirror. The laser device furthermore contains an optically active medium for generating light of a first frequency and an optically nonlinear medium for converting light of the first frequency into light of another frequency. The optically active medium and the optically nonlinear medium are in this case arranged in a beam path between the resonator mirrors. The laser device furthermore contains a first polarization-influencing laser optic that polarizes the light of the first frequency, reflected by the coupling-out mirror in the direction of the end mirror, such that a frequency conversion of the light thus polarized of the first frequency is suppressed, in particular minimized, when passing through the nonlinear medium.

Dependencies are inferred from the claim text.