TY - DATA T1 - The temporal envelopes of the attosecond pulses by synthesizing the harmonics of (a) 450th–600th, 600th–750th and 750th–900th, and (b) the pulse from 650th to 900th and its phase PY - 2013/06/21 AU - Jianghua Luo AU - Yang Li AU - Zhe Wang AU - Qingbin Zhang AU - Peixiang Lu UR - https://iop.figshare.com/articles/figure/_The_temporal_envelopes_of_the_attosecond_pulses_by_synthesizing_the_harmonics_of_a_450th_600th_600t/1012286 DO - 10.6084/m9.figshare.1012286.v1 L4 - https://ndownloader.figshare.com/files/1480108 KW - cep KW - attosecond pulse generation KW - attosecond pulses KW - Atomic Physics KW - Molecular Physics N2 - Figure 6. The temporal envelopes of the attosecond pulses by synthesizing the harmonics of (a) 450th–600th, 600th–750th and 750th–900th, and (b) the pulse from 650th to 900th and its phase. The parameters are the same as those in figure 2(b). Abstract We theoretically investigate high-order harmonic generation in a spatially inhomogeneous field with mid-infrared driving wavelength and few-cycle duration. It is found that this spatiotemporally synthesized electric field is powerful to control the quantum path; as a result an ultra-broadband supercontinuum with bandwidth over 300 eV can be obtained successfully. Important characteristics of the attosecond pulse generation, including temporal envelope, harmonic chirp and carrier–envelope phase (CEP) dependence are further discussed. The results show that close-to-Fourier-limit 27 as isolated pulses are straightforwardly filtered from the supercontinuum. Moreover, such short isolated attosecond pulses can be supported by nearly all the CEPs of the laser electric field. This would open a way to obtain broadband isolated attosecond pulses with no need of CEP stabilization of the laser field. ER -