Energy levels and optical properties of neodymium-doped barium fluorapatite
- Center For Materials Research, Norfolk State University, Norfolk, Virginia 23504 (United States)
Energy levels of the 4f{sup 3} electronic configuration of Nd{sup 3+} in barium fluorapatite, Ba{sub 5}(PO{sub 4}){sub 3}F(B-FAP) have been determined from polarized absorption and fluorescence spectra using crystals at 8 K. Experimental energy-level assignments were made initially by comparing the crystal spectra energy levels with those obtained from those previously reported for Nd{sup 3+} in strontium fluorapatite and fluorapatite. The initial crystal-field parameters were calculated by using lattice summation techniques. The crystal-field parameters were varied to obtain a best fit between experimental and theoretical energies and the final values give a root-mean-square deviation of 7.1 cm-1. The odd-fold crystal-field components are used to calculate the emission intensities and lifetimes of the Nd{sup 3+} ions in B-FAP. These calculations yield results in good agreement with the experimental measurements of the absorption and emission cross sections and lifetimes. (c) 2000 American Institute of Physics.
- OSTI ID:
- 20217174
- Journal Information:
- Journal of Applied Physics, Vol. 88, Issue 4; Other Information: PBD: 15 Aug 2000; ISSN 0021-8979
- Country of Publication:
- United States
- Language:
- English
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