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首页> 外文期刊>Journal of Physics Communications >Stabilization of isolated attosecond pulse by controlling the emission time of high-order harmonics
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Stabilization of isolated attosecond pulse by controlling the emission time of high-order harmonics

机译：通过控制高次谐波的发射时间来稳定孤立的阿秒脉冲

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Features of an isolated attosecond pulse generated by three-color fields are investigated as a function of the time delays between different-frequency components. It is found that there is a window for the time delays in which the characteristics of an isolated attosecond pulse are relatively stable. By analyzing the variation of the driving field and the harmonic emission time with the time delays, the stability of the isolated attosecond pulse is well explained. This analysis shows that by confining the harmonic emission time in a half-cycle, the sensitivity of an isolated attosecond pulse to the shift of time delays can decrease, which is important to the ultrafast measurement with an isolated attosecond pulse.
机译：研究了由三色场生成的孤立的阿秒脉冲的特征，该特征是不同频率分量之间的时间延迟的函数。发现存在一个时间延迟窗口，其中隔离的阿秒脉冲的特性相对稳定。通过分析驱动磁场和谐波发射时间随时间的变化，很好地解释了孤立的阿秒脉冲的稳定性。该分析表明，通过将谐波发射时间限制在一个半周期内，可以降低孤立的阿秒脉冲对时延偏移的灵敏度，这对于使用孤立的阿秒脉冲进行超快速测量非常重要。

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