concentrated Nd: Yttrium aluminum garnet YAG crystals up to 3.5 at.% Nd and ceramics up
to 3.8 at.% Nd is reported. A highly doped 2.4 at.% Nd: YAG laser, passively Q switched by a
Cr4: YAG saturable absorber, is demonstrated.© 2002 American Institute of Physics. DOI:
10.1063/1.1483926 Owing to the high optical-to-electrical efficiency and the ability to
resonantly excite the energy levels of the laser active ions, diode laser pumping has a major …