Journal of East China Normal University(Natural Science) ›› 2023, Vol. 2023 ›› Issue (4): 86-93.doi: 10.3969/j.issn.1000-5641.2023.04.009

• Physics and Electronics • Previous Articles     Next Articles

Plasma grating generation based on interactions between intense lasers and solids

Fengyi YUAN1, Jiaxiang WANG2,*(), Yuanling HUANG1, Xuzhong ZHU2   

  1. 1. State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai 200241, China
    2. Institute of Theoretical Physics, School of Physics and Electronic Science, East China Normal University, Shanghai 200241, China
  • Received:2022-04-30 Online:2023-07-25 Published:2023-07-25
  • Contact: Jiaxiang WANG


Plasma gratings are important in physics because they do not break down in strong fields. Using particle-in-cell (PIC) simulations, a new mechanism to generate plasma grating was developed based on the interactions between picosecond intense laser pulses (the magnitude of $ I $ is ${10}^{15}\;\mathrm{W}/{\mathrm{c}\mathrm{m}}^{2}$ ) and overcritical solid-density plasma (particle number density $n \approx 10{n}_{\rm{c}}$ ). This plasma grating results from the interference of plasma waves excited by strong laser fields in solids. Hence, one laser beam is sufficient for generating the gratings. The method produced a nanometer spatial period, which is significantly different from the micrometer spatial period produced by traditional methods that use two counter-propagating lasers in gas-density plasma. This finding may be useful for manipulating strong x-band frequency laser fields.

Key words: intense laser, plasma grating, particle-in-cell (PIC) simulation

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