Nonequilibrium population distribution in excited electronic states of Tb3+ in Y3Al5O12
John B. GruberUniversity of Texas at San Antonio 1 Department of Physics and Astronomy, , San Antonio, Texas 78249-0697, USADhiraj K. SardarUniversity of Texas at San Antonio 1 Department of Physics and Astronomy, , San Antonio, Texas 78249-0697, USAKelly NashUniversity of Texas at San Antonio 1 Department of Physics and Astronomy, , San Antonio, Texas 78249-0697, USAU. V. ValievNational University of Uzbekistan 2 Faculty of Physics, , 100174 Tashkent, UzbekistanVladimir SokolovNational University of Uzbekistan 2 Faculty of Physics, , 100174 Tashkent, UzbekistanSharof A. RakhimovNational University of Uzbekistan 2 Faculty of Physics, , 100174 Tashkent, Uzbekistan
ABI
Аннотация
The Zeeman effect has been studied within the “green” range of luminescence due to the radiative 4f→4f transitions D54→F75 for the rare earth ion Tb3+ in yttrium aluminum garnet (Y3Al5O12) at a sample temperature of 85 K. The special features associated with the magnetic field dependence of the Zeeman splitting have been explained for transitions observed in the geometry of the longitudinal and transverse Zeeman effect. An analysis of the results obtained from the magneto-optical data indicates that in a magnetic field a nonequilibrium population distribution occurs between the sublevels of the quasidoublet state (Γ1,Γ4) in the D54 manifold. The energy of the quasidoublet state is approximately 20 585 cm−1.
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