137 citations · 384 across the 14 of their papers we have counts for
8 papers · 1 filter
Generation and control of extreme ultraviolet free-space optical skyrmions with high harmonic generation
Yiqi Fang, Yunquan Liu
Optical skyrmion serves as a crucial interface between optics and topology. Recently, it has attracted great interest in linear optics. Here, we theoretically introduce a framework…
Controlling Photon Transverse Orbital Angular Momentum in High Harmonic Generation
Yiqi Fang, Shengyue Lu, Yunquan Liu
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 wit…
Photoelectronic mapping of spin-orbit interaction of intense light fields
Yiqi Fang, Meng Han, Peipei Ge +6
The interaction between a quantum particle's spin angular momentum and its orbital angular momentum is ubiquitous in nature. In optics, the spin-orbit optical phenomenon is closely…
Amplification of light pulses with orbital angular momentum (OAM) in nitrogen ions lasing
Haicheng Mei, Jingsong Gao, Kailu Wang +6
Nitrogen ions pumped by intense femtosecond laser pulses give rise to optical amplification in the ultraviolet range. Here, we demonstrated that a seed light pulse carrying orbital…
Generating optical cat states via quantum interference of multi-path free-electron-photons interactions
Feng-Xiao Sun, Yiqi Fang, Qiongyi He +1
The novel quantum effects induced by the free-electron-photons interaction have attracted increasing interest due to their potential applications in ultrafast quantum information p…
Topologically Protected Strong-Interaction of Photonics with Free Electron
Jing Li, Yiqi Fang, Yunquan Liu
We propose a robust scheme of studying the strong interactions between free electrons and photons using topological photonics. Our study reveals that the topological corner state c…
Controlling Magnetic and Electric Nondipole Effects with Synthesized Two Perpendicularly Propagating Laser Fields
Yankun Dou, Yiqi Fang, Peipei Ge +1
Nondipole effects are ubiquitous and crucial in light-matter interaction. However, they are too weak to be directly observed. In strong-field physics, motion of electrons is mainly…
Structured air lasing of N2+
Jingsong Gao, Xiang Zhang, Yang Wang +8
Structured light has attracted great interest in scientific and technical fields. Here, we demonstrate the first generation of structured air lasing in N2+ driven by 800 nm femtose…