137 citations · 384 across the 14 of their papers we have counts for
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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…
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…
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…
Spatiotemporal steering of photoelectron emission in multiphoton above-threshold ionization
Xiaochun Gong, Cheng Lin, Mingming Liu +11
We experimentally demonstrate spatiotemporal steering of photoelectron emission in multiphoton above-threshold single ionization of atoms exposed to a phase-controlled orthogonally…