| ATOMIC AND MOLECULAR PHYSICS |
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Multiphoton Ionization from Multiple Orbitals of N2 in Strong Laser Fields |
WANG Yang1,2, KANG Hui-Peng1,2, QUAN Wei1, ZHANG Xiao-Yin1,2, LIN Zhi-Yang1,2, WU Ming-Yan1,2, LIU Hong-Ping1, LIU Xiao-Jun1 |
| 1State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071 2Graduate School of Chinese Academy of Sciences, Beijing 100049 |
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| Cite this article: |
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WANG Yang, KANG Hui-Peng, QUAN Wei et al 2010 Chin. Phys. Lett. 27 083202 |
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Abstract We investigate multiphoton ionization (MPI) of N2 exposed to femtosecond laser fields at 400 nm and 800 nm experimentally. Photoelectron energy spectra are measured with a high resolution photoelectron spectrometer at laser intensities up to 1014 W/cm2. Prominent resonant peaks observed at 400 nm can be attributed to the resonance with molecular Rydberg states corresponding to different molecular orbitals, revealing the importance of the multiple orbitals contribution in strong field molecular dynamics.
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| Keywords:
32.80.Rm
42.50.Hz
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Received: 23 March 2010
Published: 28 July 2010
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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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