Abstract
The two-photon (TP) spectra of the Cu+ and Ag+ impurities in some alkali chloride hosts have been obtained; here the ion is situated in a nearly octahedral chloride environment. Since the d→s transitions observed in the near UV are electronically allowed in TP spectroscopy (δ=3 gm), a simple theory of the polarization studies, in conjunction with the DV-Xα computer code led to a definitive characterization of the 1Eg, 1T2g crystal field splitting of the d9s excited state. We also obtained evidence of the Jahn–Teller effect in the 1Eg(d9s) state as well as a good understanding of the mixing of the 1Eg, 1T2g states resulting from the dynamic and static displacements of Cu+. The absolute value of the two-photon cross section was measured and compared to a calculated value.
Published Version
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