Cr4+:YAG has high damage
threshold, good thermal conductivity, good chemical
stability and is resistant to ultraviolet radiation.
Cr4+:YAG can be also used for tunable lasers with output adjustable
between 1350-1550 nm. It can generate ultrashort pulses when pumped at
1064 nm by a Nd:YAG laser.
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.