建立了400 mm×400 mm口径单脉冲普克尔盒实验装置,采用小尺寸KDP晶体替代方案,完成了对400 mm×400 mm口径内不同区域时间特性的研究,并以此为依据获得使用全尺寸KDP晶体时普克尔盒的时间特性。通过对普克尔盒参数的优化设计,实现了全口径大面积高电导率等离子体的形成,气体击穿稳定,实验测得的普克尔盒不同区域的开关效率均大于99.5%。计算结果显示,在1200 Pa以及2000 Pa放电气压下,全尺寸KDP晶体普克尔盒的开关上升时间分别为78.4 ns和80.7 ns。

The one-pluse-process plasma electrodes Pockels cell has been established. Five pieces of KDP crystals with 50 mm×50 mm are inserted into the specific areas in the aperture instead of the one-piece crystal with 400 mm×400 mm to investigate the temporal behaviour of the Pockels cell. Owing to the optimum designs,the full aperture high conductive plasma has been created,and the breakdown of the operating gas is stable. The measured switching efficiencies of full aperture are higher than 99.5%. At the neon pressure of 1200 Pa and 2000 Pa,the rise-times of the Pockels cell with full-scale KDP crystal are 78.4 ns and 80.7 ns,respectively.