Single-pinhole diffraction of few-cycle isolated attosecond pulses with a two-color field

Single-pinhole diffraction of few-cycle isolated attosecond pulses with a two-color field
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双色场少周期孤立阿秒脉冲的单针孔衍射

DOI:
10.1088/1674-1056/25/3/035201
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发表时间:
2016-01
期刊:
影响因子:
1.7
通讯作者:
Gu Yuqiu
Gu Yuqiu
中科院分区:
物理与天体物理3区
文献类型:
--
作者:
Wang Shaoyi;Han Dan;Dong Kegong;Wu Yuchi;Tan Fang;Zhu Bin;Fan Quanping;Cao Leifeng;Gu Yuqiu

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在双色场中理论上研究了孤立阿秒脉冲的时空表征。结果表明,通过添加弱控制场可以有效地产生中心波长为16 nm的几个周期的孤立阿秒脉冲。利用分离和延迟单元,可以将孤立的阿秒脉冲分离为两个相同的阿秒脉冲,然后获得具有不同延迟的两个脉冲的单针孔衍射图案。衍射图案严重依赖于阿秒脉冲的周期,这有助于获得相干源的时间信息。
The spatio-temporal characterization of an isolated attosecond pulse is investigated theoretically in a two-color field. Our results show that a few-cycle isolated attosecond pulse with the center wavelength of 16 nm can be generated effectively by adding a weak controlling field. Using the split and delay units, the isolated attosecond pulse can be split to the two same ones, and then single-pinhole diffractive patterns of the two pulses with different delays can be achieved. The diffractive patterns depend severely on the periods of the attosecond pulses, which can be helpful to obtain temporal information of the coherent sources.
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