High-order harmonic generation in sub-one-cycle regime

doi:10.1088/1674-1056/21/6/064216

Abstract We theoretically investigate the high-order harmonic generation from the hydrogen atom driven by the laser pulses with the durations less than the optical cycle. It is found that the switching term of the laser field may have an obvious influence on the cutoff, intensity or plateau structure of the high-order harmonic spectrum. Generally speaking, the switching term can shorten the cutoff of the high-order harmonic spectrum for a relatively longer pulse and extend the cutoff for a relatively shorter pulse.

Keywords: high-order harmonic generation sub-one-cycle pulse switching term

Received: 27 October 2011
Revised: 27 December 2011
Accepted manuscript online:

PACS:

42.65.Ky

(Frequency conversion; harmonic generation, including higher-order harmonic generation)

Fund: Project supported by the National Natural Science Foundation of China (Grant No. 10734080, 11074263, 60978013, 60921004, and 10874194) and the Doctor Fund of Henan Polytechnic University (Grant No. B2011-076).

Corresponding Authors: Niu Yue-Ping, Gong Shang-Qing
E-mail: niuyp@ecust.edu.cn; sqgong@ecust.edu.cn

Cite this article:

Xiang Yang(向阳), Niu Yue-Ping(钮月萍), Qi Yi-Hong(祁义红), and Gong Shang-Qing(龚尚庆) High-order harmonic generation in sub-one-cycle regime 2012 Chin. Phys. B 21 064216

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