Generation of an XUV supercontinuum by optimization of the angle between polarization planes of two linearly polarized pulses in a multicycle two-color laser field

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Title Generation of an XUV supercontinuum by optimization of the angle between polarization planes of two linearly polarized pulses in a multicycle two-color laser field
Author Yao, Jinping; Li, Yao; Zeng, Bin; Xiong, Hui; Xu, Han; Fu, Yuxi; Chu, Wei; Ni, Jielei; Liu, Xiaojun; Chen, Jing; Cheng, Ya; Xu, Zhizhan
Journal Name Physical Review A
Year Published 2010
Place of publication United States
Publisher American Physical Society
Abstract We theoretically investigate the high-order harmonic generation (HHG) in helium using a two-color laser field synthesized by an intense 25-fs laser pulse at 800 nm and a relatively weak ~43-fs laser pulse at 1400 nm. When the polarization between the two pulses is arranged at an angle of ~73°, supercontinuum spectra are dramatically broadened to 180 eV, which is sufficient to support an isolated ∼73-as pulse without any phase compensation. The physical mechanisms behind the phenomenon are well explained in terms of quantum and classical analyses. Furthermore, in the long-pulse regime, this method of extending the supercontinuum spectrum shows the significant advantage over previous two-color HHG schemes.
Peer Reviewed Yes
Published Yes
Alternative URI http://dx.doi.org/10.1103/PhysRevA.82.023826
Volume 82
Issue Number 2
Page from 023826-1
Page to 023826-5
ISSN 1050-2947
Date Accessioned 2011-11-26; 2012-02-16T05:30:37Z
Research Centre Centre for Quantum Dynamics
Faculty Faculty of Science, Environment, Engineering and Technology
Subject Atomic and Molecular Physics; Nonlinear Optics and Spectroscopy
URI http://hdl.handle.net/10072/42769
Publication Type Journal Articles (Refereed Article)
Publication Type Code c1x

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