| Title | Controlling Photon Transverse Orbital Angular Momentum in High Harmonic Generation |
| Authors | Fang, Yiqi Lu, Shengyue Liu, Yunquan |
| Affiliation | Peking Univ, Sch Phys, State Key Lab Mesoscop Phys, Beijing 100871, Peoples R China Peking Univ, Sch Phys, Collaborat Innovat Ctr Quantum Matter, Beijing 100871, Peoples R China Beijing Acad Quantum Informat Sci, Beijing 100193, Peoples R China Shanxi Univ, Collaborat Innovat Ctr Extreme Opt, Taiyuan 030006, Shanxi, Peoples R China Peking Univ, Yangtze Delta Inst Optoelect, Nantong 226010, Jiangsu, Peoples R China |
| Keywords | OPTICAL VORTICES LIGHT TIME |
| Issue Date | 28-Dec-2021 |
| Publisher | PHYSICAL REVIEW LETTERS |
| Abstract | High harmonic generation (HHG) with longitudinal optical orbital angular momentum has attracted much attention over the past decade. Here, we present the first study on the HHG with transverse orbital angular momentum driven by the spatiotemporal optical vortex (STOV) pulses. We show that the produced spatial-resolved harmonic spectra reveal unique structures, such as the spatially spectral tilt and the fine interference patterns. We show these spatiospectral structures originate from both the macroscopic and microscopic effect of spatiotemporal optical singularity in HHG. Employing two-color counterspin and countervorticity STOV pulses, we further discuss a robust method to control the spatiotemporal topological charge and spectral structure of high-order harmonics. The conservation rule of photon transverse orbital angular momentum in HHG process is also discussed when mixing with photon spin angular momenta. |
| URI | http://hdl.handle.net/20.500.11897/638003 |
| ISSN | 0031-9007 |
| DOI | 10.1103/PhysRevLett.127.273901 |
| 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 |
