物理学报2012，Vol.61Issue(20)：220-228,9.
多周期双色场方案下附加脉冲频率对阿秒脉冲产生的影响
Effects of additional pulse wavelength at different frequencies on attosecond pulse generation in multicycle two-color laser field
摘要
Abstract
We theoretically investigate the effects of additional pulse wavelength at different frequencies on attosecond pulse generation from the hydrogen atom exposed to multicycle two-color laser field, by numerically solving the one-dimensional time-dependent Schrodinger equation. The results show that when the wavelength of the additional pulse is set to be 1600 nm, the cutoff position of the harmonic spectra is extended dramatically compared with the scenario in the case of 533 nm pulse in visible waveband, accordingly the bandwidth of supercontinuum is widened, finally 78 attosecond pulse is obtained by wavelet transform. In this paper, we explain the effects of additional pulse wavelength in different wavebands on high order harmonic generation for the first time according to the optical oscillation frequency of the synthesized field. Also, such a result is conducible to choosing the appropriate additional pulse frequency in order to obtain the isolated attosecond pulse.关键词
高次谐波/孤立阿秒脉冲/长脉宽组合脉冲Key words
high harmonic generation/single attosecond pulse/multicycle synthesized pulse分类
数理科学引用本文复制引用
孟健,陈高,刘胜男..多周期双色场方案下附加脉冲频率对阿秒脉冲产生的影响[J].物理学报,2012,61(20):220-228,9.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）
