A5100366015- Orbital Angular Momentum in Optics
- Optical Wireless Communication Technologies
- Advanced Fiber Laser Technologies
- Laser-Matter Interactions and Applications
- Adaptive optics and wavefront sensing
- Cold Atom Physics and Bose-Einstein Condensates
- Photonic and Optical Devices
- Nonlinear Optical Materials Studies
- Strong Light-Matter Interactions
- Advanced Condensed Matter Physics
- Physics of Superconductivity and Magnetism
- Magnetic and transport properties of perovskites and related materials
- Solid State Laser Technologies
- Radio Wave Propagation Studies
- Photorefractive and Nonlinear Optics
- Acoustic Wave Resonator Technologies
- Quantum, superfluid, helium dynamics
- Advanced Fiber Optic Sensors
- Maritime Navigation and Safety
- Traumatic Brain Injury Research
- Cellular Automata and Applications
- Spectral Theory in Mathematical Physics
- Lipid Membrane Structure and Behavior
- Molecular spectroscopy and chirality
- Nuclear Physics and Applications
National University of Defense Technology
2025
Zaozhuang University
2025
Peking Union Medical College Hospital
2025
Chinese Academy of Medical Sciences & Peking Union Medical College
2025
Tsinghua University
2024
Nanjing Normal University
2020-2023
Zhongnan University of Economics and Law
2016-2023
Shenzhen University
2017
Anhui Institute of Optics and Fine Mechanics
2015-2016
Chinese Academy of Sciences
2015-2016
Abstract As the last element in Group VA, bismuthene has garnered substantial interest for its unique electronic and mechanical properties enhanced stability. However, mechanism that drives light‐bismuthene interaction remains completely unclear. Herein, a sonochemical exfoliation approach is employed to deliver successful synthesis of few‐layer bismuthene. The corresponding nonlinear optical response at visible wavelength investigated. refractive index ∼10 −6 cm 2 /W was measured by spatial...
Antimonene, a new type of mono/few-layer two-dimensional (2D) mono-elemental material purely consisting antimony similar as graphene and phosphorene, has been theoretically predicted with excellent optical response enhanced stability. Herein, we experimentally investigated the broadband nonlinear highly stable few-layer antimonene (FLA) by performing an open-aperture Z-scan laser measurement. Thanks to direct bandgap resonant absorption at telecommunication band, demonstrated feasibility...
Bismuthene, the last and heaviest group-VA elemental two-dimensional material, has received tremendous interests owing to its advantages in electronic-transport, semimetallic bonding, intrinsic spin-orbit coupling. However, light–bismuthene interaction is relatively less investigated. Herein, sonochemical exfoliation approach had been employed deliver a successful synthesis of few-layer bismuthene with an average thickness ∼3 nm lateral size ∼0.2 μm. The corresponding band structure from...
The analytical formulae for the wave structure functions (WSF) and spatial coherence radius of plane spherical waves propagating through oceanic turbulence are derived. It is found that Kolmogorov five-thirds power law WSF also valid in inertial range. changes versus different parameters examined.
To study the enhancement effect of carbon nanotubes (CNTs) on splitting tensile properties foamed concrete backfill in which cement and fly ash were used as cementitious materials natural sand was aggregate, specimens CNT-modified prepared. Brazilian tests to investigate strength backfill, digital speckle correlation method analyze stress field characteristics crack expansion law during testing. The stress–strain energy dissipation laws studied at various static loading rates, a relationship...
In this work, the formulas of critical power and self-focusing length a partially-polarized partially-coherent beam are derived. Due to simultaneous consideration polarization coherence features, it plays beneficial role in avoiding air breakdown prolonging propagation distance compared with Gaussian beam. Particularly, analytical expressions essential physical quantities obtained, including phase, width, effective length, intensity, degree polarization, coherence, these nonlinear...
Based on the power spectrum of oceanic turbulence proposed by Nikishov, analytical expressions for average intensity M×N Gaussian array beams propagating in are derived, where coherent and incoherent combinations considered. Using focused beam, can be received at same point. The changes versus three parameters investigated.
A high-power laser beam propagating in an absorbing medium, thermal blooming causes phase distortion, which is severe for the quality. In this Letter, a feasible approach obtaining change induced by proposed. addition, based on aforementioned change, alternative solution of compensation near receiver provided, may enrich previous method (i.e., using adaptive optics system transmitter). These findings have potential applications optical communication, astronomical imaging, and related areas.
Disorders of consciousness (DoC)-that is, unresponsive wakefulness syndrome/vegetative state and minimally conscious state-are debilitating conditions for which no reliable markers recovery have yet been identified. Evidence points to the GABAergic system being altered in DoC, making it a potential target as such marker.In our preliminary study, we used [(11) C]Flumazenil positron emission tomography establish global GABAA receptor binding values local-to-global (LTG) ratio these specific...
Owing to the increasing demand for information transmission, capacity of free-space optical communications must be increased without being significantly affected by turbulence. Herein, based on a radially-polarized vector field array, analytical formulae three parameters are derived: average intensity, degree polarization, and local states polarization (SoPs). Propagation properties varying with propagation distance, strength turbulence, beam waist, beamlet number investigated. In...
The development of modern large-scale spectroscopic survey telescopes responds to the urgent demand for spectral information in astronomical research. Tsinghua University has previously proposed a 6.5 m MUltiplexed Survey Telescope consisting Ritchey-Chretien configuration and 1.8 multi-element wide-field corrector, achieving excellent performance world-leading efficiency. However, an optimized 1.65 corrector with five lenses is overcome constraints on glass uniformity verification...
In this study, an analytical formula for the self-focusing length of a radially polarized beam (RPB) is first derived, which has similar behavior to semi-empirical Marburger Gaussian beam, and beneficial quantitatively qualitatively analyze practical experimental scenarios. However, relation with states polarization (SoPs) was evaluated, it found that RPB spatially inhomogeneous SoP at field cross-section can retain further compared homogeneous one. The influence topological charge on...
It is found that in free space, the curves of mean-squared beam width may each have a cross point at certain propagation distance zc. For Gaussian array beams, analytical expressions zc are derived. coherent combination, larger than for incoherent combination. However, non-Kolmogorov turbulence, disappears, and beams will same directionality terms angular spread. Furthermore, short needed to reach when generalized exponent equal 3.108. In particular, it shown condition obtained previous...
In the past several years, single-reader read channel scheme reached its performance limitation. Thus, a new multiple-reader system is evaluated in this paper to have more than one back signal improve hard disk drive and capacity. The novel control loops, equalization, detection are discussed on how handle multiple signals, estimate head positions based preamble signal-to-noise ratio, jointly equalize two stream signals as well detect final output using pattern-dependent detection.
Coherence in a light beam has the potential to serve as degree of freedom for manipulating beam. In this work, self-focusing property partially coherent with non-uniform correlation structure propagating non-linear medium is investigated. The analysis evolution width reveals that coherence plays vital role formation. A threshold condition radius proposed first time, and relation length initial studied numerically analytically. It shown feasible approach by adjusting achieved.
The performance of ship propulsion systems is related to the economy, safety, and reliability operation. traditional mechanical system has problems such as high noise, small speed range, flexibility, poor economy. development new gradually become a research hotspot in shipping industry. Hybrid power energy have always been hotspots green power. shaft with motor technology can optimize distribution, thereby reducing losses improving efficiency. composite composed batteries, supercapacitors,...
As a new product brought about by technological progress, unmanned ships have shown great potential for application in various fields such as ocean exploration, resource development and utilization, environmental monitoring, maritime rescue recent years. Path planning is one of the key technologies to achieve autonomous navigation, which involves multiple aspects modeling, algorithm design, collision avoidance rules, ship maneuvering characteristics. This article aims explore current...
Two novel polynomial su(1, 1) algebras for the physical systems with first and second Pöschl-Teller (PT) potentials are constructed, their specific representations presented. Meanwhile, these used as an algebraic technique to solve eigenvalues eigenfunctions of Hamiltonians associated PT potentials. The approach explores appropriate new pair raising lowing operators \documentclass[12pt]{minimal}\begin{document}$\hat{K}_\pm$\end{document}K̂± algebra a shift our Hamiltonians. In addition, two...