Goth, KatharinaKatharinaGothGriesbeck, MichaelMichaelGriesbeckEitner, MadeleineMadeleineEitnerBüker, HendrikHendrikBükerEichhorn, MarcMarcEichhornKieleck, ChristelleChristelleKieleck2022-08-222022-08-222022https://publica.fraunhofer.de/handle/publica/41994610.1364/ol.4598922-s2.0-85132517002A continuous-wave crossed-Porro prism Ho3+:YAG laser is presented and compared with a corresponding mirror resonator. A maximum output power of 30.7 W is reached with a slope efficiency of 67.4% with respect to the absorbed pump power. The laser output beam shows a very good beam quality of better than M2 < 1.2 which clearly surpasses that of the mirror resonator. In terms of alignment sensitivity, the crossed-Porro prism resonator is superior to the mirror resonator due to the retro-reflective nature of the prisms in the axis around the apex.enjournal article