Acta Phys. -Chim. Sin. ›› 2001, Vol. 17 ›› Issue (11): 995-999.doi: 10.3866/PKU.WHXB20011108

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Investigation of Suitable LangmuirBlodgett Multilayers Structure for Optical Double Frequency Waveguide Application

Wang Gong-Ming;Ai Hui;Liu Xiu;Wang Wen-Jun;Tao Feng-Gang   

  1. Department of Optical science and Engineering, Department of Chemistry, Fudan University, Shanghai 200433
  • Received:2001-05-15 Revised:2001-07-23 Published:2001-11-15
  • Contact: Wang Gong-Ming

Abstract: Noncentrosymmetric Ytype alternating NMOB/CdA multilayers were prepared for applications of LB films in waveguidetype second harmonic generation (SHG) devices. Two kinds of methods were put forward to improve the quality of NMOB/CdA alternating multilayers, which possess nearquadratic dependence of SHG intensities on layer number. 115 bilayers of NMOB/CdA multilayers film was fabricated which met Cerenkov phasematching condition, and SHG at 1064 nm wavelength from this waveguide was measured. The preliminary results show that the improved multilayer LB films are suitable for fabricating waveguide.

Key words: Alternated LB films, Second harmonic generation, Point of solidliquid transformation, Separating polymer layer, Optical waveguide