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曾爱武, 卞学滨. 强场超快激光驱动的液体高次谐波研究[J]. 物理, 2021, 50(11): 732-739. DOI: 10.7693/wl20211103
引用本文: 曾爱武, 卞学滨. 强场超快激光驱动的液体高次谐波研究[J]. 物理, 2021, 50(11): 732-739. DOI: 10.7693/wl20211103
ZENG Ai-Wu, BIAN Xue-Bin. Progress in high harmonic generation in liquids driven by intense and ultrafast lasers[J]. PHYSICS, 2021, 50(11): 732-739. DOI: 10.7693/wl20211103
Citation: ZENG Ai-Wu, BIAN Xue-Bin. Progress in high harmonic generation in liquids driven by intense and ultrafast lasers[J]. PHYSICS, 2021, 50(11): 732-739. DOI: 10.7693/wl20211103

强场超快激光驱动的液体高次谐波研究

Progress in high harmonic generation in liquids driven by intense and ultrafast lasers

  • 摘要: 强场超快激光与自然界四种物态(气体、固体、液体、等离子体)的物质非线性相互作用,均可辐射出光子能量为基频光几十甚至上百倍的电磁波,即高次谐波。高次谐波是强场物理领域一个非常重要的研究方向,是阿秒科学的基石。目前,气体、固体和等离子体高次谐波的研究已比较深入,其产生的实验条件和相关的物理机制较为清楚,而液体高次谐波的发展较为缓慢。由于液体体系的复杂性,实验和理论研究都具有很大的挑战性。文章将回顾液体高次谐波领域的实验进展,并从统计学的角度出发,介绍作者在相关物理机制的理论探索方面的结果,展望液体高次谐波领域未来的发展前景。

     

    Abstract: When the beam from an intense and ultrafast laser interacts with matter in the four states of nature (gas, liquid, solid, and plasma), the system can emit coherent radiation with frequencies of tens or even hundreds of times that of the fundamental field. This is called high harmonic generation (HHG). As the basis of attosecond science, HHG is a major research area in strong-field physics. To date, research on HHG from gases, solids, and plasmas has made extensive progress, and the corresponding experimental conditions and the underlying physics are reasonably clear. On the other hand, the development of HHG in liquids has been quite slow due to the complexity of liquid systems, and the experimental and theoretical investigations are full of challenges. Here we will review recent experiments on liquid HHG, and then report our results in the theoretical exploration of the underlying mechanisms from a statistical perspective. Lastly, the prospects and potential applications of HHG in liquids will be briefly discussed.

     

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