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Creators/Authors contains: "Gao, Xiaohui"

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  1. ; (, Optics Letters)
    Ionization is a fundamental process in intense laser–matter interactions and is known to cause plasma defocusing and intensity clamping. Here, we investigate theoretically the propagation dynamics of an intense laser pulse in a helium gas jet in the ionization saturation regime, and we find that the pulse undergoes self-focusing and self-compression through ionization-induced reshaping, resulting in a manyfold increase in laser intensity. This unconventional behavior is associated with the spatiotemporal frequency variation mediated by ionization and spatiotempral coupling. Our results illustrate a new regime of pulse propagation and open up an optics-less approach for raising laser intensity. 
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  2. ; ; ; (, Optics Letters)
  3. ; (, Optics Letters)
  4. ; ; ; (, Physical Review A)
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  5. ; ; ; ; ; ; (, Optics Letters)