中国激光, 2009, 36 (2): 318, 网络出版: 2009-02-23
神光Ⅲ原型装置中连续相位板的应用位置分析
Analysis of Continuous Phase Plates Applying Position for TIL Facility
光学器件 连续相位板 三倍频转换效率 光束质量 焦斑整形 optical devices continuous phase plates 3ω conversion efficiency beam quality focal spot shaping
摘要
用改进的盖斯贝格-撒克斯通(G-S)算法对满足加工能力的连续相位板(CPP)进行了设计，并从对焦斑的整形能力、三倍频转换效率、近场强度调制等方面详细分析了基频光CPP和三倍频光CPP的性能优越差异，结果显示，基频光CPP可以满足焦斑的形态要求; 在采用三倍频晶体(KDP)“Ⅰ+Ⅱ”倍频方式下，失谐角越大，转换效率受影响越大，且影响程度受目标焦斑大小的限制; 对三倍频转换效率影响越大，三倍频光近场调制越大。计算结果对神光Ⅲ原型装置的CPP应用具有一定的指导意义。
Abstract
With the designed continuous phase plates (CPP) by improved G-S algorithm, the focal spot shaping ability, 3ω conversion efficiency and near field intensity modulation for two kinds of CPP were analyzed. It included that 1ω CPP can meet focal spot shaping requirement compared to 3ω CPP. With the KDP crystals by “Ⅰ+Ⅱ” styles, 3ω conversion efficiency is impacted larger when the disarrange angle being larger, and the degree is related with focal spot size; the more 3ω conversion efficiency impacted, the stronger near field intensity modulation will be. The result can instruct CPP application for TIL facility.
李平, 贾怀庭, 王芳, 刘兰琴, 粟敬钦. 神光Ⅲ原型装置中连续相位板的应用位置分析[J]. 中国激光, 2009, 36(2): 318. Li Ping, Jia Huaiting, Wang Fang, Liu Lanqin, Su Jingqin. Analysis of Continuous Phase Plates Applying Position for TIL Facility[J]. Chinese Journal of Lasers, 2009, 36(2): 318.
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