Two-photon excitation of the Ag- centers in RbCl, RbBr, and KCl have been measured. From the dependence of luminescence on the polarization of the exciting beams, the symmetry of the final levels could be obtained. In all three host crystals, we observed an intense band assigned to the 1A1g1A1g transition. At higher energies 1A1g1Eg and 1A1g1T2g transitions could be identified but their presence and intensity change in the different crystals. On the high-energy side of the investigated range, we could observe an intense luminescence signal arising from a two-step excitation process; the exciting photon energy becoming resonant with the 3T1u state (A band). © 1991 The American Physical Society.

Bellatreccia, M., Casalboni, M., Francini, R., Grassano, U.m. (1991). Even-parity excited states of Ag-centers in alkali halides. PHYSICAL REVIEW. B, CONDENSED MATTER, 43(3), 2334-2338 [10.1103/PhysRevB.43.2334].

Even-parity excited states of Ag-centers in alkali halides

CASALBONI, MAURO;FRANCINI, ROBERTO;GRASSANO, UMBERTO MARIA
1991-01-01

Abstract

Two-photon excitation of the Ag- centers in RbCl, RbBr, and KCl have been measured. From the dependence of luminescence on the polarization of the exciting beams, the symmetry of the final levels could be obtained. In all three host crystals, we observed an intense band assigned to the 1A1g1A1g transition. At higher energies 1A1g1Eg and 1A1g1T2g transitions could be identified but their presence and intensity change in the different crystals. On the high-energy side of the investigated range, we could observe an intense luminescence signal arising from a two-step excitation process; the exciting photon energy becoming resonant with the 3T1u state (A band). © 1991 The American Physical Society.
1991
Pubblicato
Rilevanza internazionale
Articolo
Esperti anonimi
Settore FIS/03 - FISICA DELLA MATERIA
English
Condensed Matter Physics
Bellatreccia, M., Casalboni, M., Francini, R., Grassano, U.m. (1991). Even-parity excited states of Ag-centers in alkali halides. PHYSICAL REVIEW. B, CONDENSED MATTER, 43(3), 2334-2338 [10.1103/PhysRevB.43.2334].
Bellatreccia, M; Casalboni, M; Francini, R; Grassano, Um
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/131200
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