中国物理B ›› 2015, Vol. 24 ›› Issue (5): 56102-056102.doi: 10.1088/1674-1056/24/5/056102

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Two waveguide layers in lithium niobate crystal formed by swift heavy Kr ion irradiation

刘涛a b, 黄庆c, 赵金花d, 孔伟金a b, 刘鹏e, 张连e, 周育范e, 于晓飞e, 王磊e, 王雪林e   

  1. a School of Physics, Qingdao University, Qingdao 266071, China;
    b Key Laboratory of Photonics Materials and Technology in Universities of Shandong (Qingdao University), Qingdao 266071, China;
    c Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China;
    d School of Science, Shandong Jianzhu University, Jinan 250101, China;
    e 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:2014-11-18 出版日期:2015-05-05 发布日期:2015-05-05
  • 基金资助:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 11275117, U1432120, and 11274188) and the Heavy Ion Research Facility in Lanzhou (HIRFL), China.

Two waveguide layers in lithium niobate crystal formed by swift heavy Kr ion irradiation

Liu Tao (刘涛)a b, Huang Qing (黄庆)c, Zhao Jin-Hua (赵金花)d, Kong Wei-Jin (孔伟金)a b, Liu Peng (刘鹏)e, Zhang Lian (张连)e, Zhou Yu-Fan (周育范)e, Yu Xiao-Fei (于晓飞)e, Wang Lei (王磊)e, Wang Xue-Lin (王雪林)e   

  1. a School of Physics, Qingdao University, Qingdao 266071, China;
    b Key Laboratory of Photonics Materials and Technology in Universities of Shandong (Qingdao University), Qingdao 266071, China;
    c Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China;
    d School of Science, Shandong Jianzhu University, Jinan 250101, China;
    e 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:2014-11-18 Online:2015-05-05 Published:2015-05-05
  • Contact: Wang Xue-Lin E-mail:xuelinwang@sdu.edu.cn
  • About author:61.80.Jh; 42.79.Gn
  • Supported by:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 11275117, U1432120, and 11274188) and the Heavy Ion Research Facility in Lanzhou (HIRFL), China.

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摘要：

We report the formation of two waveguide layers in a lithium niobate crystal by irradiation with swift heavy Kr ions with high (GeV) energies and ultralow fluences. The micro-Raman spectra are measured at different depths in the irradiated layer and show that the high electronic energy loss can cause lattice damage along the ion trajectory, while the nuclear energy loss causes damage at the end of the ion track. Two waveguide layers are formed by confinement with two barriers associated with decreases in the refractive index that are caused by electronic and nuclear energy losses, respectively.

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

Abstract:

We report the formation of two waveguide layers in a lithium niobate crystal by irradiation with swift heavy Kr ions with high (GeV) energies and ultralow fluences. The micro-Raman spectra are measured at different depths in the irradiated layer and show that the high electronic energy loss can cause lattice damage along the ion trajectory, while the nuclear energy loss causes damage at the end of the ion track. Two waveguide layers are formed by confinement with two barriers associated with decreases in the refractive index that are caused by electronic and nuclear energy losses, respectively.

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

中图分类号:  (Ion radiation effects)

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