物理学报2011，Vol.60Issue(5)：239-243,5.
双色激光脉冲辐照叠加态生成强的38as孤立脉冲
Isolated intense 38 attosecond pulse generation from the combined laser pulse irradiating the coherent superposition state
摘要
Abstract
A scheme to efficiently generate an intense short isolated attosecond pulse is presented by the combined laser pulse irradiating the coherent superposition state. The combined pulse is composed of a multi-cycle 800 nm laser and a 1600 nm one. Compared with the case of the fundamental laser irradiating the ground state, the cutoff position is significantly extended from 70th to 280th harmonic, a broadband supercontinuum spectrum with 108 eV spectral width can be produced which directly generates an isolated 38 attosecond pulse, the intensity of which is increased eleven orders of magnitude.Our simulation also shows that the value of the time delay has a large range to keep the isolated sub-50-as pulse generation. Moreover, the value of the time delay in the range between ± 0. 05r is optinal. This result shows that the scheme appears feasible for an experimental demonstration.关键词
组合激光脉冲/相干叠加态/阿秒脉冲Key words
combined laser pulse/ coherent superposition/ isolated attosecond pulse引用本文复制引用
陈基根,杨玉军,俞旭萍,何龙君,徐圆圆..双色激光脉冲辐照叠加态生成强的38as孤立脉冲[J].物理学报,2011,60(5):239-243,5.基金项目
国家自然科学基金(批准号:10604021)资助的课题. （批准号:10604021）
