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Multiple-plateau structure and scaling relation in photoelectron spectra of high-order above-threshold ionization |
| Wu Yan (吴艳)a), Ye Hui-Liang (叶会亮)a), Zhang Jing-Tao(张敬涛)a)†, and Guo Dong-Sheng (郭东升)b) |
1. State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China;
2. Southern University and A&M College, LA 70813, USA |
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Abstract By developing a full quantum scattering theory of high-order above-threshold ionization, we study the energy spectra and the angular distributions of photoelectrons from atoms with intense laser fields shining on them. We find that real rescattering can occur many times, and even infinite times. The photoelectrons from the rescattering process form a broad plateau in the kinetic-energy spectrum. We further disclose a multiple-plateau structure formed by the high-energy photoelectrons, which absorb many photons during the rescattering process. Moreover, we find that both the angular distributions and the kinetic-energy spectra of photoelectrons obey the same scaling law as that for directly emitted photoelectrons.
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Received: 27 October 2011
Revised: 27 April 2012
Accepted manuscript online:
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PACS:
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32.80.Rm
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(Multiphoton ionization and excitation to highly excited states)
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42.65.Ky
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(Frequency conversion; harmonic generation, including higher-order harmonic generation)
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12.20.Ds
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(Specific calculations)
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03.65.Nk
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(Scattering theory)
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| Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 10774513, 61078080, 11174304, and 11104167) and the National Basic Research Program of China (Grant Nos. 2010CB923203 and 2011CB808103). |
Cite this article:
Wu Yan (吴艳), Ye Hui-Liang (叶会亮), Zhang Jing-Tao(张敬涛), and Guo Dong-Sheng (郭东升) Multiple-plateau structure and scaling relation in photoelectron spectra of high-order above-threshold ionization 2012 Chin. Phys. B 21 053201
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