PHYSICS OF GASES, PLASMAS, AND ELECTRIC DISCHARGES |
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Generation of a single attosecond pulse from an overdense plasma surface driven by a laser pulse with time-dependent polarization |
Luo Mu-Hua(罗牧华) and Zhang Qiu-Ju(张秋菊)† |
College of Physics and Electronics, Shandong Normal University, Jinan 250014, China |
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Abstract The influence of time-dependent polarization on attosecond pulse generation from an overdense plasma surface driven by laser pulse is discussed analytically and numerically. The results show that the frequency of controlling pulse controls the number and interval of the generated attosecond pulse, that the generation moment of the attosecond pulse is dominated by the phase difference between the controlling and driving pulses, and that the amplitude of the controlling pulse affects the intensity of the attosecond pulse. Using the method of time-dependent polarization, a “single” ultra-strong attosecond pulse with duration τ ≈ 8.6 as and intensity I ≈ 3.08 × 1020 W·cm-2 can be generated.
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Received: 24 December 2010
Revised: 01 April 2011
Accepted manuscript online:
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PACS:
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52.38.Ph
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(X-ray, γ-ray, and particle generation)
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52.59.Hq
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(Dense plasma focus)
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52.65.Rr
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(Particle-in-cell method)
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Fund: Project supported by the Natural Science Foundation of Shandong Province of China (Grant No. ZR2009AQ009) and the National
Basic Research Program of China (Grant No. 2011CB808100). |
Cite this article:
Luo Mu-Hua(罗牧华) and Zhang Qiu-Ju(张秋菊) Generation of a single attosecond pulse from an overdense plasma surface driven by a laser pulse with time-dependent polarization 2011 Chin. Phys. B 20 085201
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