10 papers
Symmetry-Breaking Electron Dynamics Enable Ultrabroadband Optical-Field Sampling via Second-Harmonic Generation
Wenqi Tang, Ahai Chen, Michael Klaiber +4
Optical-field sampling using second-harmonic generation (SHG) from strong-field ionization enables ultrabroadband terahertz detection, but the microscopic origin of the SHG signal…
Experimental Realization of All-Optical Terahertz Attoclock
Yanjun Gao, Yizhu Zhang, Yulin Chen +8
The attoclock is a powerful tool for probing ultrafast electron dynamics with attosecond precision.Here, we demonstrate an all-optical terahertz (THz) attoclock that reconstructs p…
Temporal-Spatial Manipulation of Bi-Focal Bi-Chromatic Fields for Terahertz Radiations
Jingjing Zhao, Yizhu Zhang, Yanjun Gao +5
Mixing the fundamental () and the second harmonic (2) waves in gas phase is a widely employed technique for emitting terahertz (THz) pulses. The THz generation driven by bi-c…
Terahertz field induced near-cutoff even-order harmonics in femtosecond laser
Bing-Yu Li, Yizhu Zhang, Tian-Min Yan +1
High-order harmonic generation by femtosecond laser pulse in the presence of a moderately strong terahertz (THz) field is studied under the strong field approximation, showing a si…
Ellipticity-dependent sequential over-barrier ionization of cold rubidium
Junyang Yuan, Shiwei Liu, Xincheng Wang +10
We perform high-resolution measurements of momentum distribution on Rb recoil ions up to charge state , where laser-cooled rubidium atoms are ionized by femtosecond ell…
Terahertz Emisssion from Quantum Interference of Electron Trajectories
Yizhu Zhang, Kaixuan Zhang, Tian-Min Yan +1
The semiclassical electron trajectory, the so-called quantum orbits, is employed to explain the terahertz wave generation (TWG) in dual-color strong field, and the feasibility of t…