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基于超快动力学模型的阿秒脉冲复原方法

Reconstruction Method of Attosecond Pulses Based on Ultrafast Dynamic Model

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摘要

构建了条纹光电子能谱的终态动能分布的动力学模型,提出了等值线复原(ELR)方法。该方法考虑了辐射脉冲对应的电子波包的真实动量-时间分布,与采用的中心动量近似的传统阿秒条纹测量方法FROG-CRAB有着本质的区别。研究结果表明,与FROG-CRAB方法相比,ELR方法所得到的脉冲宽度和啁啾参数具有更高的准确度。

Abstract

A dynamic model based on the momentum distribution of the final state in the striped photoelectron energy spectra is constructed. An equal-value line reconstruction (ELR) algorithm is proposed, which includes the real momentum-time distribution of the electron wave-packet corresponding to the radiation pulse and is essentially different from the traditional attosecond streak measurement method of FROG-CRAB with a central momentum approximation. The research results show that, compared with those obtained by the FROG-CRAB method, the parameters of the pulse width and the chirp obtained by the method of ELR have a higher accuracy.

Newport宣传-MKS新实验室计划
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中图分类号:O433.4;O434

DOI:10.3788/aos201838.0932001

所属栏目:超快光学

基金项目:国家自然科学基金(11475249)、国家“千人计划”青年项目基金(Y326021061)

收稿日期:2018-03-20

修改稿日期:2018-04-11

网络出版日期:2018-04-16

作者单位    点击查看

邵任之:中国科学院上海应用物理研究所, 上海 201204中国科学院大学, 北京 100049
李宾:中国科学院上海应用物理研究所, 上海 201204中国科学院大学, 北京 100049上海科技大学物质科学与技术学院, 上海 201210

联系人作者:联系作者(libin1995@sinap.ac.cn;shaorenzhi@sinap.ac.cn)

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引用该论文

Shao Renzhi,Li Bin. Reconstruction Method of Attosecond Pulses Based on Ultrafast Dynamic Model[J]. Acta Optica Sinica, 2018, 38(9): 0932001

邵任之,李宾. 基于超快动力学模型的阿秒脉冲复原方法[J]. 光学学报, 2018, 38(9): 0932001

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