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VOLUME 56 (1992) | ISSUE 1 | PAGE 11
New shape of inhomogeneously broadened resonance lines in semi-infinite media: Sm2+ luminescence in CaF2/Si(111) thin films
The inhomogeneous broadening of resonance lines by the elastic fields of dilatation centers in a semi-infinite medium is analyzed in the case in which the elastic defects and the probes are distributed in a narrow surface layer (in a thin film). The new shape of the resonance line is derived theoretically. The theory provides an interpretation of experiments on the luminescence of Sm2 + in CaF2/Si (111) thin films.