中国物理B ›› 2011, Vol. 20 ›› Issue (6): 64201-064201.doi: 10.1088/1674-1056/20/6/064201

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Second harmonic generation in inhomogeneous MgO:LiNbO3 waveguides

李国辉, 蒋海灵, 徐信业   

  1. State Key Laboratory of Precision Spectroscopy and Department of Physics, East China Normal University, Shanghai 200062, China
  • 收稿日期:2010-08-31 修回日期:2010-12-24 出版日期:2011-06-15 发布日期:2011-06-15
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No. 10774044), the National Key Basic Research and Development Program of China (Grant No. 2010CB922903), the Shanghai Pujiang Talent Program of China (Grant No. 07PJ14038), and the Ph D Program Scholarship Fund of East China Normal University 2009 (Grant No. 2009049).

Second harmonic generation in inhomogeneous MgO:LiNbO3 waveguides

Li Guo-Hui(李国辉), Jiang Hai-Ling(蒋海灵), and Xu Xin-Ye(徐信业)†   

  1. State Key Laboratory of Precision Spectroscopy and Department of Physics, East China Normal University, Shanghai 200062, China
  • Received:2010-08-31 Revised:2010-12-24 Online:2011-06-15 Published:2011-06-15
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No. 10774044), the National Key Basic Research and Development Program of China (Grant No. 2010CB922903), the Shanghai Pujiang Talent Program of China (Grant No. 07PJ14038), and the Ph D Program Scholarship Fund of East China Normal University 2009 (Grant No. 2009049).

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摘要： A fibre laser at 1111.6 nm is frequency doubled by two inhomogeneous MgO:LiNbO3 waveguides and the output powers of 85 mW and 49 mW at 555.8 nm have been generated with the conversion efficiencies of 47% and 27% respectively. By analysing the second harmonic generation temperature tuning curves, we investigate the influence of the optical inhomogeneities upon the conversion efficiency. The final result shows that the efficiency difference is mainly affected by the optical inhomogeneities in our case.

关键词: second harmonic generation, optical inhomogeneities, waveguide

Abstract: A fibre laser at 1111.6 nm is frequency doubled by two inhomogeneous MgO:LiNbO$_{3}$ waveguides and the output powers of 85 mW and 49 mW at 555.8 nm have been generated with the conversion efficiencies of 47% and 27% respectively. By analysing  the second harmonic generation temperature tuning curves, we investigate the influence of the optical inhomogeneities upon the  conversion efficiency. The final result shows that the efficiency difference is mainly affected by the optical inhomogeneities in  our case.

Key words: second harmonic generation, optical inhomogeneities, waveguide

中图分类号:  (Fiber lasers)

  • 42.55.Wd
42.60.By (Design of specific laser systems) 42.65.Ky (Frequency conversion; harmonic generation, including higher-order harmonic generation) 42.65.Wi (Nonlinear waveguides)