Abstract

Empirically derived cubic-field energy-level schemes of fluorescence of Tb3+ in CaF2(I) are analyzed and compared with those theoretically derived. The x values for the 5D4, 7F3, 7F4, and 7F5 states are derived to the first order for a weak cubic field, and the energies are calculated to the second order. The second-order energies when added to the theoretical first-order levels of Lea, Leask, and Wolf at the calculated x values give energy levels in agreement with the empirical schemes to within 10%, substantiating the cubic crystal-field assignment for this crystal. The ratio of fourth- to sixth-order cubic crystal-field parameters (A4r4〉/A6r6〉) is found to be −11.5.

© 1967 Optical Society of America

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Corrections

Norman Rabbiner, "Errata: Cubic Crystal-Field Energy Levels, Tb3+: CaF2 (I)," J. Opt. Soc. Am. 57, 1277-1277 (1967)
https://www.osapublishing.org/josa/abstract.cfm?uri=josa-57-10-1277

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