Liu Xingren, Zhang Xiao, Yuan Jianhui, E Shulin. SPECTRAL PROPERTIES OF THE Cr3+ DOPED Ca3Al2Ge3O12 GARNETS[J]. Chinese Journal of Luminescence, 1998,19(4): 306-311
Liu Xingren, Zhang Xiao, Yuan Jianhui, E Shulin. SPECTRAL PROPERTIES OF THE Cr3+ DOPED Ca3Al2Ge3O12 GARNETS[J]. Chinese Journal of Luminescence, 1998,19(4): 306-311DOI:
The spectral properties of Cr,3+, doped calcium aluminium germanate garnet (Ca,3,Al,2,Ge,3,O,12,) have been investigated. Dependence of the zero-phonon-line positions from Cr,3+,in the inequivalent crystallographic sites has been studied as a function of concentration and temperature. The crystal field intensity parameters ,D,q and Racah parameters were deviated by analyzing the absorption and emission spectra. The fine structure of Cr,3+,in Ca,3,Al,2,Ge,3,O,12, at low temperature has been assigned as a vibronic progression in two kinds of phonon with energies ω,1,(A)=165~170cm,-1, ω,2,(A)=200cm,-1, and ω,1,(B)=130~135cm,-1, ω,2,(B)=185~190cm,-1,. The luminescence decay behavior of Cr,3+,different transitions has been investigated upon red laser excitation and showing single exponential decay curves.
关键词
R线振动光谱Cr3+离子光学光谱锗酸盐石榴石
Keywords
vibronic spectrum of R lineCr3+ionoptical spectrumgermanate garnet