Weik, F.F.WeikTomm, J.W.J.W.TommGlatthaar, R.R.GlatthaarVetter, U.U.VetterKönig, J.D.J.D.KönigNurnus, J.J.NurnusGrau, M.M.GrauMeyer, R.R.MeyerAmann, M.C.M.C.AmannSpellenberg, B.B.SpellenbergBassler, M.M.Bassler2022-03-102022-03-102005https://publica.fraunhofer.de/handle/publica/350592A new cw light source for the mid-infrared with output powers exceeding 1 mW is described. It is based on an optically pumped narrow gap semiconductor. For efficient light extraction optimised surface structure is adopted.en621conference paper