高质量高效率高稳定性参量放大光产生的研究

The generation of high efficiency and high quality and high stability parametric amplified light

针对光参量放大实验中存在的参量转换效率低、输出光脉冲形状畸变和输出稳定性差等问题进行了详细研究 ,对注入信号光强、抽运光耗尽、增益饱和、和频过程等因素对参量过程的影响进行了详细分析讨论 ,并进行了光学参量放大的实验研究 .理论和实验研究结果表明通过优化选择合适的注入信号光强、抽运光强和晶体长度等参数 ,使参量放大运行在深度增益饱和状态的稳定区 ,完全可以获得高质量高效率高稳定性的参量放大输出光 .

The effects of a series of parameters such as injected signal intensity , pump intensity, crystal length have been analyzed in Optical parametric amplification(OPA). The gain saturation and pump depletion were taken into account. The stability of an OPA system was investigated in both the small signal injection and the large signal injection. Experimental investigations of OPA based on two noncollinear phase-matched LBO OPA under the small signal injection and the large signal injection have been carried out,and the experimental data are in agreement with the theoretical results. The theoretical and experimental results all demonstrated that there exists a strong gain saturation region where parametric light with high efficiency and high quality and high stability can be obtained by properly choosing relevant system parameters.