Publications (10)
Coherent generation and control of tunable narrowband THz radiation from laser-induced air-plasma filament
Xiaoyue Zhou, Yuchen Lin, Yi Chan +2
We report on the proof-of-principle experiment of generating carrier-envelope phase (CEP)-controllable and frequency-tunable narrowband terahertz (THz) radiation from air-plasma fi…
Asymmetric double-pulse interferometric frequency-resolved optical gating for visible-wavelength time-domain spectroscopy
Yi Chan, Fu Deng, Jingdi Zhang
Ultrafast science and technology have brought in burgeoning opportunities to optical metrology, strong-field physics, non-equilibrium physics, etc., through light-matter interactio…
Sound Trapping in an Open Resonator
Lujun Huang, Yan Kei Chiang, Sibo Huang +7
The ability of extreme sound energy confinement with high-quality factor (Q-factor) resonance is of vital importance for acoustic devices requiring high intensity and hypersensitiv…
A General Framework of Bound States in the Continuum in an Open Acoustic Resonator
Lujun Huang, Bin Jia, Artem S Pilipchuk +11
Bound states in the continuum (BICs) provide a viable way of achieving high-Q resonances in both photonics and acoustics. In this work, we proposed a general method of constructing…
Enhanced Light-Matter Interactions in Dielectric Nanostructures via Machine Learning Approach
Lei Xu, Mohsen Rahmani, Yixuan Ma +9
A key concept underlying the specific functionalities of metasurfaces, i.e. arrays of subwavelength nanoparticles, is the use of constituent components to shape the wavefront of th…
Light-induced percolative topological phase transition in type-II Weyl semimetal WTe2
Xiaoyue Zhou, Fu Deng, Yifan Gao +5
We report on an ultrafast terahertz free-carrier dynamic study of a photo-excited WTe2 thin film. In the photo-excited state, we observe a metastable electronic state featuring neg…
Frequency-selective terahertz wave amplification by a time-boundary-engineered Huygens metasurface
Fu Deng, Fengjie Zhu, Xiaoyue Zhou +7
Ultrafast manipulation of optical resonance can establish the time-boundary effect in time-variant media leading to a new degree of freedom for coherent control of electromagnetic…
Automatic-differentiation-enabled dynamic parameter retrieval with sub-pulse-width resolution
Huaiyue Peng, Yuchen Lin, Fu Deng +2
Time-resolved terahertz time-domain spectroscopy (THz-TDS) is a phase-sensitive tool in condensed matter physics for tracking photoinduced non-equilibrium dynamics of low-energy el…
Ultrafast dynamics of three-dimensional Kane plasmons in the narrow-bandgap HgCdTe
Xiaoyue Zhou, Yi Chan, Siyuan Zhu +3
We report on an ultrafast terahertz spectroscopic study on the dynamics of free carriers and the pertinent bulk plasmons in HgCdTe (MCT) film, a narrowband semicond…
Topological Supercavity Resonances In the Finite System
Lujun Huang, Bin Jia, Yan Kei Chiang +7
Acoustic resonant cavities play a vital role in modern acoustical systems. They have led to many essential applications for noise control, biomedical ultrasonics, and underwater co…