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Chinese Physics, 2003, Vol. 12(5): 518-523    DOI: 10.1088/1009-1963/12/5/310
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Effects of transverse profile of pump field on second harmonic generation in periodic nonlinear materials

Zhang Han-Zhuang (张汉壮), Yang Jian-Bing (杨建冰), Gao Jin-Yue (高锦岳)
College of Physics, Jilin University, Changchun 130023, China
Abstract  We report on a theoretical analysis of the effects of a converging pump field of Gaussian transverse profile on second harmonic generation in a periodic nonlinear material with quasi-phase-matching. The outputs of the centre intensity and the intensity flux for second harmonic generation are derived by simulation, based on the parameters of quasi-phase-mismatch, the waist and focus positions of the input pump beam. The results show that when the transverse profile of the pump field is taken into account, the quasi-phase-match value and focus position of input beam for maximal second harmonic generation follow new criteria.
Keywords:  periodic nonlinear materials      second harmonic generation      quasi-phase-matching  
Received:  09 February 2002      Revised:  14 October 2002      Accepted manuscript online: 
PACS:  42.65.Ky (Frequency conversion; harmonic generation, including higher-order harmonic generation)  
  42.70.Mp (Nonlinear optical crystals)  
  02.60.Cb (Numerical simulation; solution of equations)  
Fund: Project supported by the Foundation for Excellent Young Teachers from the Ministry of Education of China, and the Foundation for University Key Teachers from the Ministry of Education of China.

Cite this article: 

Zhang Han-Zhuang (张汉壮), Yang Jian-Bing (杨建冰), Gao Jin-Yue (高锦岳) Effects of transverse profile of pump field on second harmonic generation in periodic nonlinear materials 2003 Chinese Physics 12 518

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