title: Intense isolated few-cycle attosecond XUV pulses from overdense plasmas driven by tailored laser pulses.
abstract: A new scheme to generate an intense isolated few-cycle attosecond XUV pulse is demonstrated using particle-in-cell simulations. By use of unipolarlike or subcycle laser pulses irradiating a thin 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 duration of several hundred attoseconds. The pulse 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 × 10(12) Vm(-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.
authors: Zi-Yu
authors: ZY
authors: Chen
authors: Xiao-Ya
authors: XY
authors: Li
authors: Li-Ming
authors: LM
authors: Chen
authors: Yu-Tong
authors: YT
authors: Li
authors: Wen-Jun
authors: WJ
authors: Zhu