利用质子交换ＭｇＯ∶ＬｉＮｂＯ３平板波导研究了对近红外半导体激光器的切伦科夫倍频特性，实现了对９５６ｎｍ和８０４ｎｍ半导体激光器的直接倍频，得到了４７８ｎｍ的倍频蓝光和４０２ｎｍ的倍频紫光输出。在基频导模功率小于１ｍＷ的低入射功率下，倍频光功率的估算值约在０．１μＷ和０．０１μＷ之间。对实验结果和实验中存在的问题进行了讨论 Using the proton exchange MgO: LiNbO3 slab waveguide, we study the Cerenkov frequency multiplication characteristics of the near-infrared semiconductor laser. The direct multiplication of the 956nm and 804nm semiconductor lasers is achieved. The frequency doubling blue light of 478nm and the frequency doubled harmonic of 402nm Output. At low incident powers with a fundamental pilot mode power of less than 1 mW, the estimated octave optical power is approximately between 0.1 μW and 0.01 μW. The experimental results and the problems in the experiment were discussed