A5115547287- Quantum, superfluid, helium dynamics
- Advanced Fiber Laser Technologies
- Nonlinear Photonic Systems
- Quantum Mechanics and Non-Hermitian Physics
- Nuclear Physics and Applications
- High-pressure geophysics and materials
- Atomic and Subatomic Physics Research
- Spectroscopy and Laser Applications
- Photonic and Optical Devices
- Quantum optics and atomic interactions
- Quantum chaos and dynamical systems
- Advanced Photonic Communication Systems
- Methane Hydrates and Related Phenomena
- Mechanical and Optical Resonators
- Advanced Fiber Optic Sensors
- Topological Materials and Phenomena
- Optical Network Technologies
- Photorefractive and Nonlinear Optics
Huazhong University of Science and Technology
2023-2024
Wuhan National Laboratory for Optoelectronics
2023-2024
East China Normal University
2023-2024
Experimental demonstration of tunable temporal Goos-Hänchen shift (GHS) in synthetic discrete-time heterolattices with scalar and vector gauge potentials is reported. By using Heaviside-function modulation two fiber loops, we create a sharp gauge-potential interface observe GHS for total internal reflection (TIR), which manifests as time delay rather than spatial shift. The TIR occurs the incident mode falls into band gap transmitted region shifting by potential. We find that both potential...
The utilization of wideband flat-top spectrum electro-optical (EO) combs with enhanced robustness and coherence enables their application as multicarrier sources in wavelength-division multiplexing, thereby facilitating the development novel techniques for optical communication. This study presents a new approach achieving an all-fiber flat broadband EO comb through time-frequency domain shaping. We developed hybrid pulse shaping technique utilizing nonlinear loop mirror effect polarization...
Abstract Refraction is a basic beam bending effect at two media’s interface. While traditional studies focus on stationary boundaries, moving boundaries or potentials could enable new laws of refractions. Meanwhile, discretization plays pivotal role in refraction owing to Galilean invariance breaking principle discrete-wave mechanics, making highly moving-speed dependent. Here, by harnessing synthetic temporal lattice fiber-loop circuit, we observe discrete time gauge-potential barrier. We...
Abstract Dynamic localization (DL) refers to a wavefunction confinement effect of electrons in periodic lattices under an ac electric field driving. Recent studies have transplanted DLs from electronic photonic systems using periodically curved waveguide lattices, where the is mimicked by waveguide's bending curvature. However, due severe limitations losses and poor tunability for highly curved, arbitrarily shaped waveguides, present mainly focus on DL simplest sinusoidal‐wave driving; its...
Mid-infrared optical sources have been extensively used in a variety of applications, including gas sensing and metrology, by exploiting the fingerprint fundamental vibrational absorption bands molecules this spectral region. Parametric frequency conversion techniques, such as parametric generation (OPG) oscillator (OPO), represent common methodologies for mid-infrared generation. Notably, continuous-wave (CW)-seeded OPG exhibits superior stability performance compared to conventional OPG....
Here we experimentally demonstrate the dynamics of Bloch-Zener oscillations (BZOs) in a synthetic temporal lattice formed by optical pulses coupled fiber loops. By periodically modulating phases imposed to linear driven lattices, two-band Floquet system with tunable bandgaps is realized, and related BZOs that occurred this are displayed. On basis, manipulating phase difference coupling angle lattice, widths 0-gap
Due to the influence of chemical reactions, phase change, and other phenomena, combustion system is a complicated high-temperature environment. Therefore, spatio-temporally resolved monitoring temperature field crucial for gaining comprehensive understanding intricate In this study, we proposed fast high-precision measurement technique based on mid-infrared (MIR) dual-comb spectroscopy with high spectral resolution refresh rate. Based technique, non-uniform was achieved along laser path. To...
We have constructed an approximate microscopic model for the neutron dynamic structure factor of solid methane in phase II. expect our to apply energies below 1\textit{eV} at pressures near 1 bar and temperatures 20K, where exists a phase, called II, which tetrahedral hydrogens exist mixed free rotors hindered rotors. Certain matrix elements needed $S(Q, ω)$ are adapted from calculation by Ozaki \textit{et al.}\cite{ozaki:3442}\cite{ozaki2}. The treats effects molecular translations,...