| Title | Comparison Study of Strong-Field Ionization of Molecules and Atoms by Bicircular Two-Color Femtosecond Laser Pulses |
| Authors | Lin, Kang Jia, Xinyan Yu, Zuqing He, Feng Ma, Junyang Li, Hui Gong, Xiaochun Song, Qiying Ji, Qinying Zhang, Wenbin Li, Hanxiao Lu, Peifen Zeng, Heping Chen, Jing Wu, Jian |
| Affiliation | East China Normal Univ, State Key Lab Precis Spect, Shanghai 200062, Peoples R China. Southwest Jiaotong Univ, Sch Phys Sci & Technol, Chengdu 610031, Sichuan, Peoples R China. Shanghai Jiao Tong Univ, Key Lab Laser Plasmas, Minist Educ, Shanghai 200240, Peoples R China. Shanghai Jiao Tong Univ, Sch Phys & Astron, CICIFSA, Shanghai 200240, Peoples R China. Peking Univ, Ctr Appl Phys & Technol, HEDPS, Beijing 100084, Peoples R China. Inst Appl Phys & Computat Math, POB 8009, Beijing 100088, Peoples R China. Shanxi Univ, Collaborat Innovat Ctr Extreme Opt, Taiyuan 030006, Shanxi, Peoples R China. East China Normal Univ, State Key Lab Precis Spect, Shanghai 200062, Peoples R China. Chen, J (reprint author), Peking Univ, Ctr Appl Phys & Technol, HEDPS, Beijing 100084, Peoples R China. Chen, J (reprint author), Inst Appl Phys & Computat Math, POB 8009, Beijing 100088, Peoples R China. Wu, J (reprint author), Shanxi Univ, Collaborat Innovat Ctr Extreme Opt, Taiyuan 030006, Shanxi, Peoples R China. |
| Keywords | HIGH-HARMONIC GENERATION INDUCED ELECTRON-DIFFRACTION MULTIPHOTON IONIZATION DIATOMIC-MOLECULES MOMENTUM HELIUM SINGLE |
| Issue Date | 2017 |
| Publisher | PHYSICAL REVIEW LETTERS |
| Citation | PHYSICAL REVIEW LETTERS. 2017, 119(20). |
| Abstract | We experimentally investigate the single and double ionization of N-2 and O-2 molecules in bicircular two-color femtosecond laser pulses, and compare with their companion atoms of Ar and Xe with comparable ionization thresholds. Electron recollision assisted enhanced ionization is observed in N-2 and Ar by controlling the helicity and field ratio between the two colors, whereas the enhanced ionization via the recollision is almost absent in O-2 and Xe. Our S-matrix simulations clearly reveal the crucial role of the detailed electronic structures of N-2 and O-2 on the two-dimensional recollision of the electrons driven by the bicircular two-color laser fields. As compared to Ar, the resonant multiphoton excitation dominates the double ionization of Xe. |
| URI | http://hdl.handle.net/20.500.11897/497580 |
| ISSN | 0031-9007 |
| DOI | 10.1103/PhysRevLett.119.203202 |
| Indexed | SCI(E) EI PubMed |
| Appears in Collections: | 工学院 |
