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基于焦斑空间频谱控制的连续相位板设计

Ping LI,Chi MA,Jing-qin SU,Wen-yong CHENG,Lan-qin LIU,Wen-yi WANG,Lei MO,Li-dan ZHOU

Qiangjiguang Yu Lizishu/High Power Laser and Particle Beams（2008）

Cited 8|Views7
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Abstract
改进了传统的盖斯贝格-撒克斯通(G-S)算法,其中包含:改善了初始相位的选取;远场振幅采用弱调制,迭代中进行解相、滤波.以保证设计的相位板连续;对目标焦斑的频谱控制,使焦斑能量在频谱上重新分配.结果表明:相对传统设计的连续相位板(CPP),改进后的G-S算法可以控制CPP的加工单元大小,降低CPP的相位梯度,更好地控制焦斑轮廓,降低特定频带的调制.进一步分析表明,新方法设计的CPP与光谱色散匀滑技术耦合的效果更佳.
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Key words
Continuous phase plates,Focal spot shaping,G-S algorithm,Inertial confinement fusion,Spatial spectrum
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