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Role of excited states in the elliptically polarized harmonic generation |
Du Hong-Chuan (杜洪川), Wen Yi-Zhen (文一震), Wang Xiao-Shan (王小山), Hu Bi-Tao (胡碧涛) |
School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, China |
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Abstract We theoretically investigate the contribution of the excited state to the ellipticity of the harmonics from H2+ at different orientation angles irradiated by a linearly polarized laser pulse. It is found that the first excited state has a significant influence to the ellipticity of the harmonics, and the contribution of higher excited states to the ellipticity can be neglected. Moreover, the conclusion is not dependent on the laser intensity.
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Received: 16 June 2013
Revised: 02 September 2013
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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Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 91026021, 11075068, 10875054, 11175076, and 10975065) and the Fundamental Research Funds of the Central Universities of China (Grant No. lzujbky-2010-k08). |
Corresponding Authors:
Hu Bi-Tao
E-mail: hubt@lzu.edu.cn
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Cite this article:
Du Hong-Chuan (杜洪川), Wen Yi-Zhen (文一震), Wang Xiao-Shan (王小山), Hu Bi-Tao (胡碧涛) Role of excited states in the elliptically polarized harmonic generation 2014 Chin. Phys. B 23 033202
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