Intra-4f 2 two-photon transitions in Pr 3+ : LiYF 4

Two-color two-photon excitation of intra-4ƒ blue transitions in Pr 3+ :Y 3 Al 5 O 12

Visible lasing on five intermultiplet transitions of the ion Pr 3+ in LiYF 4

Photon echoes in Tb 3+ :LiYF 4 and Pr 3+ :LiYF 4 (A)

Direct Calculation of Two-Photon Absorption Transition Intensities of Pr 3+ in Cs 2 NaPrCl 6

Probabilities of intracenter spontaneous radiative and nonradiative intermultiplet transitions in the Er 3 + ion in the LiYF 4 crystal

Observation of Magnetic-Dipole Transitions for Pr3+ in LiYF4