Zeitner, U.D.U.D.ZeitnerAagedal, H.H.AagedalWyrowski, F.F.Wyrowski2022-03-032022-03-031999https://publica.fraunhofer.de/handle/publica/19449010.1364/AO.38.000980The spatial shaping of laser beams is a subject of research in modern optics. Recently the introduction of diffractive elements in laser resonators has offered an alternative to external beam-shaping optics by mode shaping within the resonator. We describe the specification of the laser resonator mirrors to obtain by means of internal mode shaping a desired beam outside the resonator. Modal discrimination of the modified resonator and the mirror alignment sensitivity is discussed. Basic features of resona-tororiginated and external beam shaping are compared.endiffractive opticslaser beam shapingLaser resonator620535journal article