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

王少义  韩丹  董克攻  吴玉迟  谭放  朱斌  范全平  曹磊峰  谷渝秋  
【摘要】: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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