Open AccessProposal for single attosecond pulse production with a 43 fs super intense laser pulse
Author(s) -
Wei Cao,
Pengfei Lan,
Peixiang Lu
Publication year - 2007
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.56.1608
Subject(s) - harmonics , attosecond , laser , physics , high harmonic generation , atomic physics , pulse (music) , ionization , optics , superposition principle , ion , harmonic spectrum , plateau (mathematics) , ultrashort pulse , quantum mechanics , voltage , mathematical analysis , mathematics , detector
High harmonics generation (HHG) from Ne atom driven by a multi-cycle 43 fs laser pulse is investigated. The numerical simulation demonstrates that when the intensity of the driving laser is over-saturated, the atom will be ionized rapidly during a few optical cycles, this will lead to a continuous multi-plateau structure in the cutoff region of the high harmonics spectrum from the neutral atom. It is also shown that the signal of high-order harmonics from the ion becomes remarkable when the driving laser is super intense. The superposition of an appropriate sub-plateau can give single attosecond soft X-ray pulse, and the effect of HHG from ion has been eliminated through the band selection.