Gh. Xiao et al., Z-scan measurement of the ground and excited state absorption cross sections of Cr4+ in yttrium aluminum garnet, IEEE J Q EL, 35(7), 1999, pp. 1086-1091
Z-scan measurements of the ground and excited state absorption cross sectio
ns of Cr4+-doped yttrium aluminum garnet are reported. These quantities are
found to depend on crystal preparation but are independent of temperature
from -60 degrees C to 98 degrees C. Their ratio is shown to weakly determin
e the energy output of a passively Q-switched Nd:glass laser using this mat
erial as the saturable absorber.