| ATOMIC AND MOLECULAR PHYSICS |
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Generation of a Super Strong Attosecond Pulse from an Atomic Superposition State Irradiated by a Shape-Optimized Short Pulse |
| GUO Fu-Ming, YANG Yu-Jun, JIN Ming-Xing, DING Da-Jun, ZHU Qi-Ren |
| Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012 |
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| Cite this article: |
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GUO Fu-Ming, YANG Yu-Jun, JIN Ming-Xing et al 2009 Chin. Phys. Lett. 26 113203 |
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Abstract Using a linearly polarized, phase-stabilized 3-fs driving pulse of 800nm central wavelength shape-optimized on its ascending edge by its an amplitude-reduced pulse irradiating on a superposition state of the helium atom, we demonstrate theoretically the generation of a super strong isolated 176-attosecond pulse in the spectral region of 93-124eV. The unusually high intensity of this attosecond pulse is marked by the Rabi-like oscillations emerging in the time-dependent populations of the ground state and the continuum during the occurrence of the electron recombination, which is for the first time observed in this work.
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| Keywords:
32.80.Rm
42.50.Hz
42.65.Ky
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Received: 30 March 2009
Published: 30 October 2009
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| PACS: |
32.80.Rm
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(Multiphoton ionization and excitation to highly excited states)
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42.50.Hz
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(Strong-field excitation of optical transitions in quantum systems; multiphoton processes; dynamic Stark shift)
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42.65.Ky
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(Frequency conversion; harmonic generation, including higher-order harmonic generation)
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