3rd International Conference Laser M2P

J. Phys. IV France 04 (1994) C4-611-C4-611
DOI: 10.1051/jp4:19944161

Two-photon excitation of the [MATH] transitions of Ce³⁺ in LuPO₄ : a comparison between theoretical and experimental intensities

J. SZTUCKI^{1, 2} and J. SYTSMA<sup>3

1</sup>  Institut de Physique Nucléaire de Lyon, IN2P3-CNRS et Université Claude Bernard, 43 Bd du 11 Novembre 1918, 69622 Villeurbanne cedex, France
²  Instytut Niskich Temperatur i Badan Strukturalnych, P.A.N., skr. poczt. 937, 50-950 Wroclaw, Poland
³  Chemical Sciences Division, Lawrence Berkeley Laboratory, Berkeley CA 94720, U.S.A.

Abstract
The theory of two-photon f-d transitions developed by Sztucki and Strek has been adopted to the particular case of the Ce³⁺ ion in LuPO₄. The intensities of two-photon transitions from the ground state [MATH] to the five crystal-field components of the 5d¹ state has been calculated and compared with the experimental data. It has been shown that the crystal-field mechanism is not able to reproduce the experimental results properly. Taking into account the contribution produced by light induced polarization of ligands (so called dynamic mechanism) led to the fairly good agreement between theory and experiment. It has been demonstrated how the analysis of the relative intensities of TP transitions can serve as an experimental test of the theoretical ratio between the static and dynamic contributions.

© EDP Sciences 1994