Setzpfandt, F.F.SetzpfandtSukhorukov, A.A.A.A.SukhorukovNeshev, D.N.D.N.NeshevSchiek, R.R.SchiekTünnermann, A.A.TünnermannPertsch, T.T.Pertsch2022-03-112022-03-112010https://publica.fraunhofer.de/handle/publica/366963We predict theoretically and observe experimentally an abrupt power-controlled transition from unstaggered to staggered second harmonic phase profiles of discrete solitons with linear second harmonic coupling in periodically poled waveguide arrays.en620Phase transition of discrete quadratic solitonsconference paper