| Title | Comparative study on atomic and molecular Rydberg-state excitation in strong infrared laser fields |
| Authors | Lv, Hang Zuo, Wanlong Zhao, Lei Xu, Haifeng Jin, Mingxing Ding, Dajun Hu, Shilin Chen, Jing |
| Affiliation | Jilin Univ, Inst Atom & Mol Phys, Changchun 130012, Peoples R China. Jilin Univ, Jilin Prov Key Lab Appl Atom & Mol Spect, Changchun 130012, Peoples R China. Peking Univ, Ctr Appl Phys & Technol, HEDPS, Collaborat Innovat Ctr IFSA, Beijing 100084, Peoples R China. Inst Appl Phys & Computat Math, POB 8009, Beijing 100088, Peoples R China. Jilin Univ, Inst Atom & Mol Phys, Changchun 130012, Peoples R China. Xu, HF Ding, DJ (reprint author), Jilin Univ, Jilin Prov Key Lab Appl Atom & Mol Spect, Changchun 130012, Peoples R China. Chen, J (reprint author), Peking Univ, Ctr Appl Phys & Technol, HEDPS, Collaborat Innovat Ctr IFSA, Beijing 100084, Peoples R China. Chen, J (reprint author), Inst Appl Phys & Computat Math, POB 8009, Beijing 100088, Peoples R China. |
| Keywords | ABOVE-THRESHOLD-IONIZATION MULTIPHOTON IONIZATION ENHANCEMENT HELIUM PULSES SINGLE N2 |
| Issue Date | 2016 |
| Publisher | PHYSICAL REVIEW A |
| Citation | PHYSICAL REVIEW A.2016,93,(3). |
| Abstract | Rydberg-state excitation of atoms in strong infrared laser fields provides a new complementary aspect of the perspective of atom-strong field interactions. In this article, we perform an experimental and theoretical study on the corresponding process of diatomic molecules, N-2 and O-2. We show that neutral molecules can also survive strong 800-nm laser fields in high Rydberg states, while their behavior is remarkably different in comparison with their companion atoms, Ar and Xe. The Rydberg excitation of N-2 generally behaves similarly to Ar, while that of O-2 is more significantly suppressed than the ionization compared to Xe in a high intensity region, which can be understood in the frame of a semiclassical picture, together with their different structures of molecular orbitals. However, distinct quantum features in the Rydberg excitation processes that are apparently beyond the semiclassical picture have been identified, i.e., the less suppressed probability of O-2 at low intensity and the oscillation behavior of the ratio between N-2 and Ar, indicating that our understanding of the relevant physics is still far from complete. |
| URI | http://hdl.handle.net/20.500.11897/437532 |
| ISSN | 2469-9926 |
| DOI | 10.1103/PhysRevA.93.033415 |
| Indexed | SCI(E) EI |
| Appears in Collections: | 工学院 |
