Theoretical description of 0⇆0 and 0⇆1 transitions in the Eu3+ ion in hosts with C2v symmetry

The results of numerical analysis performed for the electric dipole transitions observed in Eu3+ in the host with C-2v symmetry are presented. The discussion is focused on the one-photon transitions [F-7](0)-[D-5](0), [D-5](1)-[F-7](0) and [D-5](1)-[F-7](1). However, to complete the investigations, numerical results obtained for [D-5](0)-[F-7](2), [D-5](0)-[F-7](4) and [F-7](0)-[D-5](2) are also reported. The approach is based on the second-order Judd-Ofelt theory modified by the third-order terms caused by electron correlation effects. In the case of the 0 --> 1 transition, for the first time, the calculations are performed within the alternative formulation of second-order theory based on the velocity form of electric dipole radiation operator.