Properties of Up-conversion Emission of Er3+-doped Silicate Glasses

doi:10.3724/SP.J.1077.2007.00030

Abstract

Abstract: Absorption spectra and up-conversion emission spectra of Er³⁺-doped silicate glasses were investigated. The intensity parameters Ω_λ(λ=2,4,6), the oscillator strength, the spontaneous transition probabilities and the fluorescence branching ratios were calculated by the theory of Judd-Ofelt. The up-conversion emission spectra show there are stronger green light and red light centered about 522nm, 545nm and 658nm, corresponding to the transition of ²H_11/2→⁴I_15/2、⁴S_3/2→⁴I_15/2、⁴F_9/2→⁴I_15/2, and the slope of fitted lines is 1.76, 1.94, 1.67, respectively, which indicates a two-photon process for the green and red light. The up-conversion mechanisms are determined to be excited state absorption and energy transfer.

Key words: excited state absorption, energy transfer, up-conversion emission, two-photon absorption

CLC Number:

TQ171

LI Wei-Nan,ZOU Kuai-Sheng,LU Min,XIANG Li-Bin. Properties of Up-conversion Emission of Er^3+_-doped Silicate Glasses[J]. Journal of Inorganic Materials, DOI: 10.3724/SP.J.1077.2007.00030.

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Properties of Up-conversion Emission of Er^3+_-doped Silicate Glasses

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