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arXiv · 1403.5932

Intense isolated few-cycle attosecond XUV pulses from overdense plasmas driven by tailored laser pulses

Zi-Yu Chen·Xiao-Ya Li·Li-Ming Chen·Yu-Tong Li·Wen-Jun Zhu
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Abstract

A method to generate an intense isolated few-cycle attosecond XUV pulse is demonstrated using particle-in-cell simulations. When a tailored laser pulse with a sharp edge irradiates a foil target, a strong transverse net current can be excited, which emits a few-cycle XUV pulse from the target rear side. The isolated pulse is ultrashort in the time domain with a duration of several hundred attoseconds. It also has a narrow bandwidth in the spectral domain compared to other XUV sources of high-order harmonics. It has most energy confined around the plasma frequency and no low-harmonic orders below the plasma frequency. It is also shown that XUV pulse of peak field strength up to $ 8\times 10^{12} $ V$\mathrm{m}^{-1}$ can be produced. Without the need for pulse selecting and spectral filtering, such an intense few-cycle XUV pulse is better suited to a number of applications.

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Zi-Yu Chen, Xiao-Ya Li, Li-Ming Chen, Yu-Tong Li, Wen-Jun Zhu. 2014-03-24. Intense isolated few-cycle attosecond XUV pulses from overdense plasmas driven by tailored laser pulses. https://doi.org/10.1364/oe.22.014803

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