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The Behavior of Active Centers in a Laser Host. A Crystal Field Investigation on Sm 3+ in LaF 3 Single Crystal
Author(s) -
Neogy D.,
Purohit T.
Publication year - 1987
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2221390217
Subject(s) - hyperfine structure , crystal (programming language) , quadrupole , ion , field (mathematics) , atomic physics , mixing (physics) , laser , stark effect , materials science , spectral line , condensed matter physics , chemistry , molecular physics , physics , optics , quantum mechanics , mathematics , pure mathematics , organic chemistry , computer science , programming language
The behavior of the Kramers ion Sm 3+ in the widely used laser host LaF 3 is studied in detail, theoretically. The results obtained with a crystal field of D 3h symmetry which explains the absorption spectra quite well are in fairly good agreement with the available experimental data on this doped material. The crystal field and the spin—orbit interaction matrix set up in the ground term basis is diagonalized simultaneously to obtain the precise Stark energies and wave functions, and this automatically takes care of the crystal field mixing of different J ‐multiplets so important for this ion. The nuclear level splitting of the isotopes of this ion due to the electric quadrupole and magnetic interactions which are strongly influenced by the crystal field and the consequences of the hyperfine splitting are worked out.