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The polarized absorption spectra of Tm3+/Er3+:YVO4 crystal were measured at room temperature. Based on the Judd-Ofelt theory, the spectral parameters were obtained: the intensity parameters Wl of Tm3+ in Tm/Er:YVO4 crystal: W2 = 10.69×10-20, W4 = 0.604×10-20, W6 = 2.05×10-20 cm2 for the (100) face and W2 = 10.43×10-20, W4 = 0.13×10-20, W6 = 1.83×10-20 cm2 for the (001) face. Based on these values, the oscillator strength, radioactive lifetime and fluorescence branch ratio were calculated for Tm3+ in Tm/Er:YVO4 crystal.
Based on the Judd-Ofelt theory, the spectral parameters were obtained: the intensity parameters Wl of Tm3 + in Tm / Er: YVO4 crystal: W2 = 10.69 × 10 -20, W4 = 0.604 × 10-20, W6 = 2.05 × 10-20 cm2 for the (100) face and W2 = 10.43 × 10-20, W4 = 0.13 × 10-20, W6 = 1.83 × 10-20 cm2 for the (001) face. Based on these values, the oscillator strength, radioactive lifetime and fluorescence branch ratio were calculated for Tm3 + in Tm / Er: YVO4 crystal.