大口径KDP晶体高效率倍频的实验研究

Experimental research on efficient frequency doubling using a large aperture KDP crystal

本文介绍了利用直径为50mm、Ⅱ类匹配的KDP晶体进行单块晶体倍频和双块晶体串接倍频的实验结果。输入基频激光功率密度分别为2.8GW/cm^2和2.2GW/cm^2时,单块与双块晶体倍频能量转换效率分别为70％和67％。并对实验结果进行了讨论。

Experimental results are reported by using a 50mm diameter type II matched KDP crystal and a tandem KDP crystal for frequency doubling. Overall energy conversion efficiency up to 70% and 67% have been measured at an input laser intensity of 2.8 GW/cm2 for the monolithic and 2.2GW/cm2 for the tandem doubling respectively. The experimental results are analysed and discussed.