DIRECT CALCULATION OF THE 2-PHOTON LINE-STRENGTH OF A GAMMA(1G)-GAMMA-1G TRANSITION IN OCTAHEDRAL SYMMETRY

Authors
CHUA M TANNER PA
Citation
M. Chua et Pa. Tanner, DIRECT CALCULATION OF THE 2-PHOTON LINE-STRENGTH OF A GAMMA(1G)-GAMMA-1G TRANSITION IN OCTAHEDRAL SYMMETRY, Physical review. B, Condensed matter, 54(16), 1996, pp. 11014-11017
Citations number
43
Categorie Soggetti
Physics, Condensed Matter
Journal title
Physical review. B, Condensed matter → ACNP
ISSN journal
01631829
Volume
54
Issue
16
Year of publication
1996
Pages
11014 - 11017
Database
ISI
SICI code
0163-1829(1996)54:16<11014:DCOT2L>2.0.ZU;2-F
Abstract
Using a direct calculation, the line intensity of the two-photon (F-7( 6))Gamma (lg)-Gamma (lg)(D-5(4)) transition of Tb3+ in the elpasolite lattice has been accounted for under third-order perturbation theory. Employing the appropriate 4f(7)5d intermediate levels, chi and mu, the transition moment has been written in terms of eIectric-dipole allowe d transitions between the 4f(8) and 4f(7)5d cofigurations, and of the spin-orbit coupling between the intermediate states. The calculated li ne strength is sensitive to the locations of the intermediate-state en ergy levels.