Open AccessSingle attosecond pulse generation by tightly focused laser beam-electron interaction
Author(s) -
Wei Cao,
Pengfei Lan,
Peixiang Lu
Publication year - 2006
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.55.2115
Subject(s) - optics , physics , attosecond , laser , ultrashort pulse , pulse (music) , femtosecond pulse shaping , multiphoton intrapulse interference phase scan , pulse duration , bandwidth limited pulse , thomson scattering , beam (structure) , atomic physics , detector
The nonlinear Thomson scattering by an electron in a focused circularly polarized laser beam is investigated and a novel scheme for single attosecond pulse generation is proposed.Through computer simulation we find that by using a tightly focused laser beam,the ratio of the highest peak pulse and the second highest peak pulse of the radiation which is defined as the signal-to-noise ratio can be efficiently increased, such that a single attosencond pulse rather than a train of attosecond pulses is obtained. The pulse duration of the radiation decreases and the signal-to-noise ratio increases with increasing laser intensity.Simultaneously,the signal-to-noise ratio can be also improved as the beam-waist decreases.We find that a single attosencond pulse can be generated by using a few-cycle ultrashort laser pulse as well.