Yk. Voronko et al., INTERACTION OF TM3-NIOBI UM-GALLIUM AND YTTRIUM-ALUMINUM GARNETS( IONS IN CALCIUM), Kvantovaa elektronika, 20(11), 1993, pp. 1100-1104
Cross-relaxation of Tm3+, ions H-3(4) --> F-3(4), H-3(6) --> F-3(4) in
CNGG and YAG laser crystals and nonradiative energy transfer from Cr3
+ to Tm3+ ions in YAG crystals have been studied. Dipole-dipole and sh
ort-range quadrupole-quadrupole mechanisms of interaction have been id
entified.