中国物理B ›› 2012, Vol. 21 ›› Issue (5): 56103-056103.doi: 10.1088/1674-1056/21/5/056103

• CONDENSED MATTER: STRUCTURAL, MECHANICAL, AND THERMAL PROPERTIES • 上一篇    下一篇

Effects of swift argon-ion irradiation on the proton-exchanged LiNbO3 crystal

黄庆,刘鹏,刘涛,郭沙沙,王雪林   

  1. School of Physics, State Key Laboratory of Crystal Materials and Key Laboratory of Particle Physics and Particle Irradiation (MOE), Shandong University, Jinan 250100, China
  • 收稿日期:2011-11-23 修回日期:2012-04-27 出版日期:2012-04-01 发布日期:2012-04-01
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No. 10975094), the National Basic Research Program of China (Grant No. 2010CB832906), the Foundation for the Author of National Excellent Doctoral Dissertation of China, the Independent Innovation Foundation of Shandong University and the National Laboratory for the heavy Ion Research Facility in Lanzhou, China

Effects of swift argon-ion irradiation on the proton-exchanged LiNbO3 crystal

Huang Qing(黄庆), Liu Peng(刘鹏), Liu Tao(刘涛), Guo Sha-Sha(郭沙沙), and Wang Xue-Lin(王雪林)†   

  1. School of Physics, State Key Laboratory of Crystal Materials and Key Laboratory of Particle Physics and Particle Irradiation (MOE), Shandong University, Jinan 250100, China
  • Received:2011-11-23 Revised:2012-04-27 Online:2012-04-01 Published:2012-04-01
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No. 10975094), the National Basic Research Program of China (Grant No. 2010CB832906), the Foundation for the Author of National Excellent Doctoral Dissertation of China, the Independent Innovation Foundation of Shandong University and the National Laboratory for the heavy Ion Research Facility in Lanzhou, China

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摘要： A proton-exchanged LiNbO3 crystal was subjected to 70-MeV argon-ion irradiation. The lattice damage was investigated by the Rutherford backscattering and channeling technique. It was found that the lattice disorder induced by the proton exchange process was partially recovered and the proton-exchanged layer was broadened. It indicated that the lithium ions underneath the initial proton-exchanged layer migrated to the surface during the swift argon-ion irradiation and supplemented the lack of lithium ions in the initial proton-exchanged layer. This effect was ascribed to the great electronic energy deposition and relaxation. The swift argon-ion irradiation induced an increase in extraordinary refractive index and formed another waveguide structure beneath the proton-exchanged waveguide.

关键词: swift heavy ion, lithium niobate, optical waveguide

Abstract: A proton-exchanged LiNbO3 crystal was subjected to 70-MeV argon-ion irradiation. The lattice damage was investigated by the Rutherford backscattering and channeling technique. It was found that the lattice disorder induced by the proton exchange process was partially recovered and the proton-exchanged layer was broadened. It indicated that the lithium ions underneath the initial proton-exchanged layer migrated to the surface during the swift argon-ion irradiation and supplemented the lack of lithium ions in the initial proton-exchanged layer. This effect was ascribed to the great electronic energy deposition and relaxation. The swift argon-ion irradiation induced an increase in extraordinary refractive index and formed another waveguide structure beneath the proton-exchanged waveguide.

Key words: swift heavy ion, lithium niobate, optical waveguide

中图分类号:  (Ion radiation effects)

  • 61.80.Jh
42.79.Gn (Optical waveguides and couplers)