Open AccessGenerating isolated broadband attosecond pulses with stable pulse duration in a non-colinear polarized two-color field
Author(s) -
Hong Wei-Yi,
Zhenyu Yang,
Pengfei Lan,
Qingbin Zhang,
Qianguang Li,
Peixiang Lu
Publication year - 2009
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.58.4914
Subject(s) - supercontinuum , attosecond , optics , physics , pulse duration , broadband , bandwidth (computing) , pulse (music) , femtosecond pulse shaping , polarization (electrochemistry) , bandwidth limited pulse , high harmonic generation , femtosecond , materials science , ultrashort pulse , laser , telecommunications , optical fiber , computer science , chemistry , detector , photonic crystal fiber
A new method to generate isolated broadband attosecond pulses with stable pulse duration is proposed. By adopting a few-cycle driving pulse combined with its second harmonic field, of which the polarization angle is π/3 to the driving pulse, the short path is well selected and a smooth supercontinuum with the bandwidth of about 50 eV is observed. For the intensity of the second harmonic field higher than 1014 W/cm2, the intensity variation of the second harmonic field can hardly affect the location and the bandwidth of the generated supercontinuum. Pure isolated attosecond pulses with the duration of about 100 as can be generated by directly filtering out a supercontinuum from 85—125 eV, which facilitates the experimental implement for the isolated attosecond pulse generation.