Max-planck-gesellschaft Zur F&#xf6;rderung Der Wissenschaften E. V.

David McIntyre

Claus Zimmermann

Theodor W Haensch

Andreas Hemmerich

Solid state laser comprising a solid state laser diode for generating fundamental wave laser radiation; an external ring resonator which is arranged in the beam path of the fundamental wave laser radiation and through which the fundamental wave laser radiation passes in a predetermined forward direction; an optical nonlinear medium arranged in the ring resonator for generating the 2nd harmonic of the fundamental wave laser radiation; and an arrangement for feeding fundamental wave laser radiation back to the solid state laser diode which includes a scattering optical element which is arranged in the beam path of the fundamental wave laser radiation of the ring resonator and which causes a small part of the fundamental wave laser radiation to propagate in a direction opposite to the forward direction through the beam path back to the solid state laser diode.

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Corvallis, OR, United States of America

David McIntyre