Specific features of Eu3+ and Tb3+ magnetooptics in gadolinium-gallium garnet (Gd3Ga5O12)

Magnetooptics of the luminescent transitions in Tb3+:Gd3Ga5O12

“…In fact, the photoluminescence from k = 266 nm excitation produces the intense spectra of the ''blue'' and ''green'' emission of Tb 3+ :GGG at the temperature T = 300 K (given in Fig. 1), confirming analogous experimental data obtained earlier [15]. The observed PL of the Tb 3+ ions in GGG at T = 90 K is well-resolved and strongest specifically in the ''blue'' (from 20,380 cm À1 to 20,525 cm À1 ) and ''green'' (from 18,180 cm À1 to 18,520 cm À1 ) emission bands (Figs.…”

“…2 allows us to obtain so-called ''pure'' |J,M J i states of some quasi-doublet ones of the ground and excited multiplets of Tb 3+ ion in the garnet structure, which greatly simplifies an interpretation of the magnetic [5] and magnetooptical [9,[14][15][16][17]23,25] properties of the terbiumcontaining paramagnetic garnets.…”

“…In this case, according to the symmetry rules [4,12,[14][15][16][17], the initial states of emission magneto-optically active transitions: It is well-known that terbium gallium (TbGG) and terbium-yttrium gallium (TbYGG) garnet materials are now being used to produce effective optical isolators (and modulators) in the visible and near infrared spectral region [26]. TbGG crystals exhibit a fairly high Verdet constant and a good optical transparency in the range from 400 to 1400 nm [27].…”

Sol–gel synthesis, characterization and study of substitution effects in different gallium-containing garnets

“…However, some optical, scintillation and structural properties of metal-doped YGG are similar to those of YAG or gadolinium gallium garnets (Gd 3 Ga 5 O 12 , GGG) [35][36][37]. Specific magnetooptical properties of lanthanide-doped GGG were reported elsewhere [38]. The IR luminescence was observed in chromium-doped GGG, and yellow persistent luminescence was determined in ceriumand chromium-co-doped GGG [39,40].…”

Interpretation of europium(III) spectra

“…with the magnetic field lines parallel to the light beam) [593]. The majority of the MCD studies on trivalent rare-earth ions were devoted to the Eu 3+ ion [195,212,492,513,[593][594][595][596][597][598][599][600][601][602][603][604][605][606]. The non-degenerate ground state ( 7 F can also be measured in the case of broad absorption bands, whereas Zeeman spectra cannot.…”