OPTICAL-ABSORPTION AND FLUORESCENCE INTENSITIES OF ND-3+ IN THE GARNETS CAY2MG2GE3O12 AND GD3GA5O12 AND THE BIAXIAL CRYSTAL LA2BE2O5

被引:55
作者
LOMHEIM, TS
DESHAZER, LG
机构
[1] UNIV SO CALIF, DEPT PHYS, LOS ANGELES, CA 90007 USA
[2] UNIV SO CALIF, DEPT ELECT ENGN, LOS ANGELES, CA 90007 USA
关键词
D O I
10.1103/PhysRevB.20.4343
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The Judd-Ofelt (JO) theory was applied to interpret the optical-absorption intensities of trivalent neodymium (Nd3+) in the garnets CaY2Mg2Ge3O12 and Gd3Ga5O12 and the biaxial crystal La2Be2O5 yielding the JO parameters 2, 4, and 6. The JO theory applied to the F324 fluorescence transition in Nd3+ predicts a linear relation between the ratio R of the 1.06- to 1.35-m fluorescence band intensities and the ratio 46 of JO intensity parameters. This linearity was verified by independent measurements of R and 46 for a series of Nd3+-doped crystals and was found to be dependent on the type of free-ion wave functions that were used in calculating the required transition-matrix elements. © 1979 The American Physical Society.
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页码:4343 / 4356
页数:14
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