標題: Timing analysis of infrared-driven high-order harmonic generation with above-ionization attosecond pulses
作者: Lee, Han Chieh
Jiang, Tsin Fu
物理研究所
Institute of Physics
公開日期: 1-五月-2013
摘要: We theoretically study infrared (IR)-driven high-order harmonic generation (HHG) assisted by attosecond pulses with a central energy above the atomic ionization threshold. We provide a clear physical picture for controlling HHG using the time delay between the attosecond pulses and the IR laser reported by Faria et al. [Phys. Rev. A 74, 053416 (2006)]. This physical picture also indicates that the combined attosecond pulses and IR laser can help resolve the dynamics of ionized electrons from time-dependent harmonic spectra. We present the quantum effect on HHG as an example. While leaving parent ions, ionized electrons can still emit harmonics in the semi-classically forbidden situation. The two-color excitation provides a practical method to observe the quantum effect experimentally. Furthermore, in our work, attosecond pulses and an IR field are considered with a realistic pulse shape, which shows a quantitatively important effect in controlling harmonic spectra. Accordingly, a guide to optimize the control capability for HHG is presented, and a method to determine the IR carrier-envelope phase based on the pulse-shape effect on the HHG is also proposed. (C) 2013 Optical Society of America
URI: http://dx.doi.org/10.1364/JOSAB.30.001294
http://hdl.handle.net/11536/21918
ISSN: 0740-3224
DOI: 10.1364/JOSAB.30.001294
期刊: JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS
Volume: 30
Issue: 5
起始頁: 1294
結束頁: 1302
顯示於類別:期刊論文


文件中的檔案:

  1. 000318488000032.pdf