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
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
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.
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.
(Strong-field excitation of optical transitions in quantum systems; multiphoton processes; dynamic Stark shift)
引用本文:
WANG Yang;KANG Hui-Peng;QUAN Wei;ZHANG Xiao-Yin;LIN Zhi-Yang;WU Ming-Yan;LIU Hong-Ping;LIU Xiao-Jun. Multiphoton Ionization from Multiple Orbitals of N2 in Strong Laser Fields[J]. 中国物理快报, 2010, 27(8): 83202-083202.
WANG Yang, KANG Hui-Peng, QUAN Wei, ZHANG Xiao-Yin, LIN Zhi-Yang, WU Ming-Yan, LIU Hong-Ping, LIU Xiao-Jun. Multiphoton Ionization from Multiple Orbitals of N2 in Strong Laser Fields. Chin. Phys. Lett., 2010, 27(8): 83202-083202.
[1] Agostini P et al 1979 Phys. Rev. Lett. 42 1127 [2] Protopapas M et al 1997 Rep. Prog. Phys. 60 389 Becker W et al 2002 Adv. At. Mol. Opt. Phys. 48 35 [3] Freeman R R et al 1987 Phys. Rev. Lett. 59 1092 Hansch P et al 1998 Phys. Rev. A 57 R709 [4] Rottke H et al 1996 J. Phys. B 29 1479 [5] Paulus G G et al 1994 Phys. Rev. Lett. 72 2851 [6] Yang B et al 1993 Phys. Rev. Lett. 71 3770 [7] Paulus G G et al 1994 Europhys. Lett. 27 267 [8] Giustisuzor A et al 1995 J. Phys. B 28 309 [9] McFarland B K et al 2008 Science 322 1232 Le A T et al 2009 J. Phys. B 42 211001 [10] Smirnova O et al 2009 Nature 460 972 [11] Telnov D A and Chu S I 2009 Phys. Rev. A 80 043412 [12] Jia X Y et al 2009 Phys. Rev. A 80 053405 [13] Akagi H et al 2009 Science 325 1364 [14] Keldysh L V 1965 Sov. Phys. JETP 20 1307 [15] Quan W et al 2009 Phys. Rev. Lett. 103 093001 [16] Nandor M J et al 1999 Phys. Rev. A 60 R1771 [17] Gibson G N et al 1991 Phys. Rev. Lett. 67 1230 [18] Lofthus A et al 1977 J. Phys. Chem. Ref. Data 6 113
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