Two-photon excitation of the 4[ital f][sup 1][r arrow]5[ital d][sup 1] transitions of Ce[sup 3+] in LuPO[sub 4] and YPO[sub 4]

Journal Article · Tue Jun 01 04:00:00 EDT 1993 · Physical Review, B: Condensed Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.47.14786· OSTI ID:6786599

Sytsma, J; Piehler, D; Edelstein, N M ^[1]; Boatner, L A; Abraham, M M ^[2]

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1. Chemical Sciences Division, Lawrence Berkeley Laboratory, Berkeley, California 94720 (United States)
2. Solid State Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831 (United States)

Two-photon excitation (TPE) spectra of the 4[ital f][sup 1][r arrow]5[ital d][sup 1] transitions of Ce[sup 3+] in LuPO[sub 4] and YPO[sub 4] have been investigated. For Ce[sup 3+] in LuPO[sub 4], transitions to four out of the five 5[ital d][sup 1] levels are observed as zero-phonon lines. The symmetry properties of the levels were obtained from the polarization dependence of the TPE signals. Measurements on Ce[sup 3+] in YPO[sub 4] support the given assignments. Although a crystal-field fit yields a satisfactory rms energy deviation, an unrealistic value of the spin-orbit coupling parameter, [zeta][sub 5[ital d]][sup 1], is obtained. The vibronic coupling appears to be smaller than for the single-photon absorption spectra, and the vibronic bands show a rich structure. There are striking differences between the energies and the relative intensities of the vibronic lines and the associated zero-phonon lines. The vibronic coupling is also found to be strongly dependent on the Ce[sup 3+] concentration.

• DOE Contract Number: AC03-76SF00098; AC05-84OR21400
• OSTI ID: 6786599
• Journal Information: Physical Review, B: Condensed Matter; (United States), Journal Name: Physical Review, B: Condensed Matter; (United States) Vol. 47:22; ISSN PRBMDO; ISSN 0163-1829
• Country of Publication: United States
• Language: English

Related Subjects

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& Refractories-- Physical Properties
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ENERGY LEVELS
ENERGY-LEVEL TRANSITIONS
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F STATES
IONS
LUTETIUM COMPOUNDS
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NONLINEAR OPTICS
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YTTRIUM COMPOUNDS
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