Excited state absorption of Ti3+:YAlO 3 ?

Crystal growth and luminescence properties of Cr-doped YAlO3 single crystals

“…Therefore, the emission around 610 nm is considered not to be attributed to Cr 3 þ . The emission peak might correspond to an unintentionally present Ti 3 þ impurity ion luminescence transition reported in the literature for this material [14][15][16][17]. Further research is required to better clarify the origin of the peak around 610 nm.…”

On competition between two types of anti-Stokes emission in Ho3+ and Nd3+ ions in glasses

“…Absorption spectra at room temperature (RT) were measured by a Perkin-Elmer Lambda 2 spectrometer, whilst emission spectra were obtained by a phase sensitive method (lock-in technique [7]) which was also used for recording the ESA spectra. Excitation was provided by an Ar + ion laser operating at 476.5 nm for Ho 3+ :Z-BLAN glass, and a diode laser operating at 800 nm for Nd 3+ :ALF glass.…”

Photoionization energies of Cr3+-doped LiNbO3

“…Some examples found in the literature demonstrate ESA from a meta-stable level to an ionized state, which prevented lasing of potential laser crystals [19][20][21][22]. In the case of Ti:YAlO 3 , it was demonstrated that the broad visible luminescence of Ti 3+ also led to PI of the ion.…”