中文摘要：

利用自制的单频连续Nd：YVO4激光器输出的1064nm激光作为抽运源，通过周期性极化KTP晶体外腔倍频过程实现了倍频绿光的正交振幅压缩，并研究了绿光压缩度对抽运光功率的依赖关系，当抽运光功率为59mw时．实验中观察到压缩度为0．6dR（考虑到探测效率，实际压缩度为1．1dB）的明亮绿光振幅压缩光，实验结果与理论预测基本一致。

英文摘要：

The authors realize the experimental observation of green bright quadrature amplitude squeezed light through a home-made 1064mu single-frequency Nd ：YVO4 laser doubled in a periodically poled KTP crystal inside a standing-wave cavity. The squeezing as a function of input power is investigated. When the pump power is 59 mW, the result is we observed 0. 6 dB second harmonic squeezing. The experimental results agree with the theoretical predictions.