Europium doping in KLu(WO4)2

► Successful crystal growth of new lanthanide monoclinic doped double tungstate. ► Full determination of the energy sublevels of Europium in KLu(WO4)2. ► Observation of no band transfer from the double tungstate host to Europium. ► Determination of the complete set of spectroscopic parameters of Eu3+ in KLu(WO4)2.