Optical Absorption of Single Crystals of Y₃Al₅O₁₂and Y₃Al₅O₁₂:Nd³⁺in the UV Fundamental Absorption Edge Region

VUV and cathodoluminescence spectroscopy of 12CaO · 7Al2O3

“…2 O 12 , which has 160 atoms in the unit cell [15]. Another plausible reason is the significant disorder in the lattice of C12A7 causing inhomogeneous broadening effects in the spectra.…”

Recent progress in advanced optical materials based on gadolinium aluminate garnet (Gd3Al5O12)

“…Since Gd is commercially much cheaper than Lu, the (Gd 1− x Lu x )AG solid solutions may replace LuAG to be used as cost effective and high density scintillation materials. Assayed from UV/vis absorption, the (Gd 1− x Lu x )AG solid solutions were found to have increasing optical bandgaps of ∼5.87, 5.97, 6.07, 6.17, 6.27, and 6.37 eV with increasing x from 0 to 0.5 (0.1 interval, figure 4(b)) [17], and the bandgap of (Gd 0.5 Lu 0.5 )AG has been close to that (∼6.40 eV) of a YAG single crystal [27]. The results may also imply that the luminescence property of a (Gd, Lu)AG based phosphor can be finely tuned by varying the Lu content and the onset of optical transmittance of a transparent (Gd, Lu)AG bulk (single crystal or transparent ceramic) would shift towards a shorter wavelength with increasing Lu incorporation.…”

Luminescence and excitation spectra of YAG:Nd3+ excited by synchrotron radiation

“…The optical spectra of pure YAG have been thoroughly studied before in a wide spectral range and a steeply rising intrinsic absorption edge has been found near 6.7 eV [8]. Fig.…”

“…The only exception is the investigation of the Nd 3+ 4f 3 -4f 2 5d absorption for YAG:Nd 3+ reported in Ref. [8]. In a view of the importance of this material for practical applications, we have undertaken experimental and theoretical investigations of the low-temperature emission and excitation spectra of Nd 3+ -doped YAG (including the comparison with an undoped YAG crystal) in the ultraviolet and vacuum ultraviolet spectral regions.…”