4f2to 4f5d excited state absorption in Pr3+:YAlO3

Abstract
Excited-state absorption spectra, from the 3PJ-1I6 or 1D2 manifold to 4f5d levels, recorded in the 23000 - 42000 cm-1 range and calibrated in units of cross sections, are reported and discussed in the case of Pr3+-doped YAlO3. The 4f5d4f2Pr3+ emission between 30000 and 44000 cm-1 is then observed, showing the possibility of UV laser operation following two-step excitation pumping using near-UV-visible pump photons.