Absorption and emission involving exchange-coupled nearest-neighbor ${\mathrm{Cr}}^{3+}$ and ${\mathrm{Eu}}^{3+}$ ions have been observed in ${\mathrm{Cr}}^{3+}$ -doped EuAl ${\mathrm{O}}_{3}$ at the sum of the chromium $^{2}E_{g}$ and europium $^{7}F_{1}$ energies. Weak absorption at the difference energy has also been observed. The latter is the inverse of the previously studied europium terminated chromium emission. The intensities of the ${\mathrm{Eu}}^{3+}$ sideband transitions vary with the strength of the exchange-induced electric dipole moment.Absorption and emission involving exchange-coupled nearest-neighbor ${\mathrm{Cr}}^{3+}$ and ${\mathrm{Eu}}^{3+}$ ions have been observed in ${\mathrm{Cr}}^{3+}$-doped EuAl${\mathrm{O}}_{3}$ at the sum of the chromium $^{2}E_{g}$ and europium $^{7}F_{1}$ energies. Weak absorption at the difference energy has also been observed. The latter is the inverse of the previously studied europium terminated chromium emission. The intensities of the ${\mathrm{Eu}}^{3+}$ sideband transitions vary with the strength of the exchange-induced electric dipole moment.

Physical review. B, Solid stateSep 1, 197313 citations

Role of Spontaneous and Stimulated Emission in Photon Correlations

S. Chopra, Himadri Bihari Bohidar, V. Harwalkar

Springer eBooksJan 1, 19840 citations

Anti-Stokes emission in LaAlO3 crystal doped with Tm3+ ions

P.J. Dereń, Philippe Goldner, O. Guillot-Noël

Journal of Alloys and CompoundsMar 12, 20087 citations

Absorption and emission involving exchange-coupled nearest-neighbor

{\mathrm{Cr}}^{3+}

and

{\mathrm{Eu}}^{3+}

ions have been observed in

{\mathrm{Cr}}^{3+}

-doped EuAl

{\mathrm{O}}_{3}

at the sum of the chromium

^{2}E_{g}

and europium

^{7}F_{1}

energies. Weak absorption at the difference energy has also been observed. The latter is the inverse of the previously studied europium terminated chromium emission. The intensities of the

{\mathrm{Eu}}^{3+}

sideband transitions vary with the strength of the exchange-induced electric dipole moment.