YAG crystals doped with
three-valence vanadium V3+ in tetrahedral
positions hint at being efficient passive absorbers for
lasers operating in 1.3 µm region. The efficient Q-switching
and modelocking has been obtained with a number of active
media such as Nd:YAG, Nd:YAP, Nd:KGW, Nd:YVO4
under flash-lamp and diode pumping.