中国物理B ›› 2000, Vol. 9 ›› Issue (9): 689-694.doi: 10.1088/1009-1963/9/9/011

• • 上一篇    

ANISOTROPY OF OPTICAL ABSORPTION INTENSITY IN Tm3+ DOPED YVO4 CRYSTALS

林秀华, 江炳熙   

  1. Department of Physics, State Key Laboratory for Physical Chemistry of Solid Surfaces, Xiamen University, Xiamen 361005, China; State Key Laboratory for Infrared Physics, Chinese Academy of Sciences, Shanghai 200083, China
  • 收稿日期:2000-01-28 出版日期:2000-09-15 发布日期:2005-06-10
  • 基金资助:
    Project supported by the State Key Laboratory for Infrared Physics, Chinese Academy of Sciences (Grant No. 980409), and the Natural Science Foundation Committee of Fujian Province, China (Grant No. E97001), the State Key Laboratory for Physical Chemistry

ANISOTROPY OF OPTICAL ABSORPTION INTENSITY IN Tm3+ DOPED YVO4 CRYSTALS

Lin Xiu-hua (林秀华), Jiang Bing-xi (江炳熙)   

  1. Department of Physics, State Key Laboratory for Physical Chemistry of Solid Surfaces, Xiamen University, Xiamen 361005, China; State Key Laboratory for Infrared Physics, Chinese Academy of Sciences, Shanghai 200083, China
  • Received:2000-01-28 Online:2000-09-15 Published:2005-06-10
  • Supported by:
    Project supported by the State Key Laboratory for Infrared Physics, Chinese Academy of Sciences (Grant No. 980409), and the Natural Science Foundation Committee of Fujian Province, China (Grant No. E97001), the State Key Laboratory for Physical Chemistry

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摘要： Seven absorption group-bands (1D2, 1G4, 3F2, 3F3, 3H4, 3H5, 3F4) of Tm3+ in YVO4 single crystals have been observed in the orientation absorption spectra recorded in the spectral range from 200 to 4000 nm at 300K. The integrated absorption cross section for each group-band was accurately evaluated. On the assumption that the anisotropy of this uni-axial crystal is small, the Judd-Ofelt theory was extended for the calculation of 4f-4f transition intensities of Tm3+ in YVO4. Two sets of phenomenological intensity parameters were derived from a least-squares-fit procedure. For c-axis cut sample we have Ω2=10.18 (10-20cm2), Ω4=1.96 (10-20cm2), Ω6=0.75 (10-20cm2).For a-axis cut sample we have Ω2=8.20 (10-20cm2), Ω4=2.47 (10-20cm2), Ω6=0.91 (10-20cm2). The anisotropy of the optical absorption intensities of Tm3+:YVO4 was theoretically analyzed in detail.

Abstract: Seven absorption group-bands (1D2, 1G4, 3F2, 3F3, 3H4, 3H5, 3F4) of Tm3+ in YVO4 single crystals have been observed in the orientation absorption spectra recorded in the spectral range from 200 to 4000 nm at 300K. The integrated absorption cross section for each group-band was accurately evaluated. On the assumption that the anisotropy of this uni-axial crystal is small, the Judd-Ofelt theory was extended for the calculation of 4f-4f transition intensities of Tm3+ in YVO4. Two sets of phenomenological intensity parameters were derived from a least-squares-fit procedure. For c-axis cut sample we have $\varOmega$2=10.18 (10-20cm2), $\varOmega$4=1.96 (10-20cm2), $\varOmega$6=0.75 (10-20cm2).For a-axis cut sample we have $\varOmega$2=8.20 (10-20cm2), $\varOmega$4=2.47 (10-20cm2), $\varOmega$6=0.91 (10-20cm2). The anisotropy of the optical absorption intensities of Tm3+:YVO4 was theoretically analyzed in detail.

Key words: optical absorption, Tm3+:YVO4, anisotropy, Judd-Ofelt parameters

中图分类号:  (Inorganic compounds)

  • 61.66.Fn
61.72.S- (Impurities in crystals) 78.20.Ci (Optical constants (including refractive index, complex dielectric constant, absorption, reflection and transmission coefficients, emissivity))