| Title | Strong-field photoionization of intense laser fields by controlling optical singularities |
| Authors | Fang, Yiqi Guo, Zhenning Ge, Peipei Ma, Xueyan Han, Meng Yu, Xiaoyang Deng, Yongkai Gong, Qihuang Liu, Yunquan |
| Affiliation | Peking Univ, Sch Phys, State Key Lab Mesoscop Phys, Beijing 100871, Peoples R China Peking Univ, Sch Phys, Frontiers Sci Ctr Nanooptoelect, Beijing 100871, Peoples R China Peking Univ, Collaborat Innovat Ctr Quantum Matter, Beijing 100871, Peoples R China Shanxi Univ, Collaborat Innovat Ctr Extreme Opt, Taiyuan 030006, Peoples R China Peking Univ, Yangtze Delta Inst Optoelect, Nantong 226001, Peoples R China |
| Keywords | ORBITAL ANGULAR-MOMENTUM VECTOR BEAMS VORTICES LIGHT ATOMS |
| Issue Date | Jul-2021 |
| Publisher | SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY |
| Abstract | The spatial features of a light field, such as in the form of the optical singularities, provide a new degree of freedom for the application of light fields in different areas of science and technology. However, although the exploration of structured light is growing rapidly, the investigation of strong-field photoionization using such light fields is noticeably lagging behind. Here, we present an experimental study that reveals the signatures of intense, structured light fields with controlled optical singularities in strong-field photoionization. The different types of optical singularities can be identified through photoionization observables, i.e., photoelectron momentum distributions (PMDs). By concurrently shifting the locations of the phase and polarization singularities, the focal electric field features can be designated, and subsequently, the photoionization appearances can be manipulated. In this process, the behaviors of the different intense optical singularities are clearly visualized by the PMDs. This work will advance both the strong-field science and singularity optics. |
| URI | http://hdl.handle.net/20.500.11897/614522 |
| ISSN | 1674-7348 |
| DOI | 10.1007/s11433-021-1689-7 |
| Indexed | EI SCI(E) |
| Appears in Collections: | 物理学院 人工微结构和介观物理国家重点实验室 |
