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对用质子交换法生长的ＬｉＴａＯ３（ＰＥ－ＬｉＴａＯ３）波导特性进行了研究，并利用该种波导实现了由１．０６μｍ到０．５３μｍ的切伦科夫倍频转换（ＣＳＨＧ），转换效率为１２２％／Ｗ·ｃｍ２．倍频光束质量好，垂直波导面方向的发散角度为１．３ｍｒａｄ，平行波导面方向的发散角度为３．３ｍｒａｄ．
The waveguide properties of LiTaO3 (PE-LiTaO3) grown by proton exchange method were studied and the Cerenkov doubling frequency conversion (CSHG) from 1.06μm to 0.53μm was realized with the waveguide. The conversion efficiency was 122 % / W · cm2. The frequency-doubled beam is of good quality with a divergent angle of 1.3 mrad in the direction of the vertical waveguide surface and a divergence angle of 3.3 mrad in the direction of the parallel waveguide surface.