Journal of Inorganic Materials ›› 2011, Vol. 26 ›› Issue (8): 836-840.DOI: 10.3724/SP.J.1077.2011.00836

• Research Paper • Previous Articles     Next Articles

Effect of OH- Content on Mid-infrared Emission Properties in Er3+-doped Ge-Ga-S-CsI Glasses

SUN Jie, NIE Qiu-Hua, DAI Shi-Xun, WU Li-Gang, SONG Bao-An, CHEN Fei-Fei, WANG Guo-Xiang, XU Tie-Feng   

  1. (College of Information Science and Engineering, Ningbo University, Ningbo 31521, China)
  • Received:2010-10-11 Revised:2010-11-29 Published:2011-08-20 Online:2011-07-14
  • Supported by:

    The National Natural Science Foundation of China (60878042, 60978058); Zhejiang Provincial Science Fund for Distinguished Young Scholars (R1101263); The Ningbo Optoelectronic Materials and Devices Creative Team (2009B21007); K.C.Wong Magna Fund in Ningbo University

Abstract: A series of Er3+-doped chalcogenide glasses based on Ge-Ga-S-CsI system were prepared by melt-quenching technique with distillation processing. Properties including refractive index, infrared transmission spectra, 2.85um mid-infrared emission spectra and fluorescence lifetime under 800 nm laser excitation were measured. The infrared absorption coefficients of OH- groups at 3um according to the infrared transmission spectra were calculated, and the constant KOH-Er, determined by the strength of interactions between Er3+ ions and OH- groups in the case of energy transfer was also calculated. The effect of hydroxyl content on mid-infrared emission properties of glass samples was discussed. The results show that the remnants OH- content of glass samples can be effectively reduced by the distillation processing. The 2.85um mid-infrared fluorescence emission intensity and fluorescence lifetime of Er3+ ions are also enhanced. The calculated constant KOH-Er is about 1.08×10-16cm4/s. Because of the efficiency of energy transfer between Er3+ ions and OH- groups, the remnants of a small amount of OH- groups can still directly affect the intensity of 2.85um fluorescence.

Key words: hydroxyl ion, erbium, mid-infrared luminescence, chalcogenide glass

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