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首页> 外文期刊>Physical Review, A. Atomic, molecular, and optical physics >Coherent control of broadband isolated attosecond pulses in a chirped two-color laser field
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Coherent control of broadband isolated attosecond pulses in a chirped two-color laser field

机译：two双色激光场中宽带孤立阿秒脉冲的相干控制

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摘要

A theoretical investigation is presented that uses a strong two-color laser field composed of a linearly chirpedfundamental (900 nm) and its subharmonic (1800-nm) laser pulses to control coherently the broadband isolatedattosecond pulses in high-order harmonic generations. After the subharmonic field is added, the intrinsic chirpof harmonic emission can be reduced significantly, and consequently, the temporal synchronization of harmonicemission with different photon energies at the level of the single-atom response can be realized. In addition,the scheme is robust against the carrier envelope phase variation to produce a twin pulse of stable sub-100-asduration, and the relative intensity of the twin pulses can be changed just by adjusting the relative time delay ofthe two driving pulses, which is of benefit in general pump-probe experiments.
机译：提出了一种理论研究，该研究使用由线性chi基本波（900 nm）和其次谐波（1800 nm）激光脉冲组成的强双色激光场，以高阶谐波世代相干地控制宽带隔离秒脉冲。加入亚谐波场后，可以显着降低固有chi声谐波发射，因此，可以实现单原子响应水平上具有不同光子能量的谐波发射的时间同步。另外，该方案对于载波包络相位变化具有鲁棒性，可产生稳定的亚100饱和度的双脉冲，并且仅通过调整两个驱动脉冲的相对时间延迟就可以改变双脉冲的相对强度。在一般的泵浦探针实验中很有用。

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