中国物理B ›› 2008, Vol. 17 ›› Issue (3): 1014-1019.doi: 10.1088/1674-1056/17/3/044

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The two photorefractive centres in iron doped nearly stoichiometric lithium niobate crystals

李晓春1, 孔勇发2, 王利忠2, 刘宏德2   

  1. (1)Department of Physics, College of Science, Taiyuan University of Technology, Taiyuan 030024, China；The Key Laboratory of Advanced Technique and Fabrication for Weak-Light Nonlinear Photonics Materials, Ministry of Education, Nankai University, Tianjin; (2)The Key Laboratory of Advanced Technique and Fabrication for Weak-Light Nonlinear Photonics Materials, Ministry of Education, Nankai University, Tianjin 300457, China
  • 收稿日期:2007-06-14 修回日期:2007-07-03 出版日期:2008-03-04 发布日期:2008-03-04
  • 基金资助:
    Project supported by the research funding via Program for Changjiang Scholars of China and Innovative Research Team in University, China and the National Natural Science Foundation of China (Grant No 60578019) and Program for Changjiang Scholars and Innovative Research Team in University.

The two photorefractive centres in iron doped nearly stoichiometric lithium niobate crystals

Li Xiao-Chun(李晓春)a)b), Kong Yong-Fa(孔勇发)b)†,Wang Li-Zhong(王利忠)b) and Liu Hong-De(刘宏德)b)   

  1. a Department of Physics, College of Science, Taiyuan University of Technology, Taiyuan 030024, China；b The Key Laboratory of Advanced Technique and Fabrication for Weak-Light Nonlinear Photonics Materials, Ministry of Education, Nankai University, Tianjin 300457, China
  • Received:2007-06-14 Revised:2007-07-03 Online:2008-03-04 Published:2008-03-04
  • Supported by:
    Project supported by the research funding via Program for Changjiang Scholars of China and Innovative Research Team in University, China and the National Natural Science Foundation of China (Grant No 60578019) and Program for Changjiang Scholars and Innovative Research Team in University.

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摘要： This paper investigates the photorefractive properties of iron doped lithium niobate with different [Li]/[Nb] ratios. The experimental results show two photorefractive centres for iron doped near-stoichiometric lithium niobate crystal. Besides Fe$^{2 + }$ and Fe$^{3 + }$ ions, small polarons and bipolarons are considered as another photoactive centre.

关键词: lithium niobate crystal, photorefractive effect, stoichiometric

Abstract: This paper investigates the photorefractive properties of iron doped lithium niobate with different [Li]/[Nb] ratios. The experimental results show two photorefractive centres for iron doped near-stoichiometric lithium niobate crystal. Besides Fe$^{2 + }$ and Fe$^{3 + }$ ions, small polarons and bipolarons are considered as another photoactive centre.

Key words: lithium niobate crystal, photorefractive effect, stoichiometric

中图分类号:  (Phase conjugation; photorefractive and Kerr effects)

  • 42.65.Hw
42.70.Nq (Other nonlinear optical materials; photorefractive and semiconductor materials) 71.38.Mx (Bipolarons) 78.20.-e (Optical properties of bulk materials and thin films)