Periodically poled lithium niobate whispering gallery mode microcavities on a chip

  • ZhenZhong Hao
  • Li Zhang
  • Ang Gao
  • WenBo Mao
  • XiaoDan Lyu
  • XiaoMei Gao
  • Fang BoEmail author
  • Feng Gao
  • GuoQuan ZhangEmail author
  • JingJun XuEmail author


In this study, we investigate the fabrication of periodically poled lithium niobate (PPLN) microdisk cavities on a chip. These resonators are fabricated from a PPLN film with a 16 μm poling period on insulator using conventional microfabrication techniques. The quality factor of the PPLN microdisk resonators with a 40-μm radius and a 700-nm thickness is 6.7×105. Second harmonic generation (SHG) with an efficiency of 2.2×10−6 mW−1 is demonstrated in the fabricated PPLN microdisks. The nonlinear conversion efficiency could be considerably enhanced by optimizing the period and pattern of the poled structure and by improving the cavity quality factors.


whispering gallery mode periodically poled lithium niobate microcavities second harmonic generation 


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Copyright information

© Science China Press and Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  1. 1.MOE Key Laboratory of Weak Light Nonlinear Photonics, TEDA Institute of Applied Physics and School of PhysicsNankai UniversityTianjinChina
  2. 2.The Collaborative Innovation Center of Extreme OpticsShanxi UniversityTaiyuanChina

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