5 papers
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…
Metalens array for complex-valued optical discrete Fourier transform
Randy Stefan Tanuwijaya, So Lap, Wai Chun Wong +3
Photonic computing has emerged as a promising platform for accelerating computational tasks with high degrees of parallelism, such as image processing and neural network. We presen…
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…