Isolated sub-10 attosecond pulse generation by a 6-fs driving pulse and a 5-fs subharmonic controlling pulse
Author(s) -
Yunhui Wang,
Haiping Wu,
Ying Chen,
Zelin Lu,
Chao Yu,
Qi Shi,
Kaiming Deng,
Ruifeng Lu
Publication year - 2012
Publication title -
aip advances
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.421
H-Index - 58
ISSN - 2158-3226
DOI - 10.1063/1.3702589
Subject(s) - ultrashort pulse , bandwidth limited pulse , pulse (music) , femtosecond pulse shaping , high harmonic generation , multiphoton intrapulse interference phase scan , laser , optics , attosecond , coherent control , physics , optoelectronics , materials science , detector
We theoretically study high-order harmonic generation by quantum path control in a special two-color laser field, which is synthesized by a 6 fs/800 nm fundamental pulse and a weaker 5 fs/1600 nm subharmonic controlling pulse. Single quantum path is selected without optimizing any carrier phase, which not only broadens the harmonic bandwidth to 400 eV, but also enhances the harmonic conversion efficiency in comparison with the short-plus-long scheme, which is based on 5 fs/800 nm driving pulse and 6 fs/1600 nm control pulse. An isolated 8-attosecond pulse is produced with currently available ultrafast laser sources
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