A5100606727- Advanced Fiber Laser Technologies
- Laser-Matter Interactions and Applications
- Digital Holography and Microscopy
- Magnetic properties of thin films
- Orbital Angular Momentum in Optics
- Advanced Optical Imaging Technologies
- Optical measurement and interference techniques
- Photonic Crystal and Fiber Optics
- Advanced X-ray Imaging Techniques
- Quantum Information and Cryptography
- Advanced Fiber Optic Sensors
- Magnetic Properties and Applications
- ZnO doping and properties
- Laser Design and Applications
- Image Processing Techniques and Applications
- Quantum chaos and dynamical systems
- Metallic Glasses and Amorphous Alloys
- Advanced Electron Microscopy Techniques and Applications
- Random lasers and scattering media
- Corporate Finance and Governance
- stochastic dynamics and bifurcation
- Advanced Frequency and Time Standards
- Control and Dynamics of Mobile Robots
- Advanced Fluorescence Microscopy Techniques
- Magnetic Properties of Alloys
Macau University of Science and Technology
2025
Shanghai Institute of Optics and Fine Mechanics
2018-2024
Yangzhou University
2024
Guangdong Polytechnic Normal University
2024
University of Minnesota
2023
Dalian University of Technology
2023
Lanzhou University
2017-2019
Ocean University of China
2018-2019
Beijing University of Technology
2014-2016
Chinese Academy of Sciences
2016
The magnetization reversal induced by spin orbit torques in the presence of Dzyaloshinskii-Moriya interaction (DMI) perpendicularly magnetized Ta/CoFeB/MgO structures were investigated using a combination Anomalous Hall effect measurement and Kerr microscopy techniques. By analyzing in-plane field dependent torque efficiency measurements, an effective value for DMI ~300 Oe was obtained, which plays key role to stabilize Néel walls film stack. imaging reveals that current-induced under small...
Slonczewski-like torque and the Dzyaloshinskii–Moriya interaction (DMI) are important factors in current-induced magnetization switching domain-wall motion seen ferromagnetic metal (FM)/heavy (HM) structures. We demonstrate tuning of both by inserting a thin Pt layer between Ta CoFeB Ta/CoFeB/MgO The results suggest that DMI decreases with increasing thickness (tPt) range 0–1 nm. In consequence, critical current density from induced spin-orbit (SOT) increases whereas required in-plane field...
Remote transfer of an ultralow-jitter microwave frequency reference signal is demonstrated using the pulse trains generated by a mode-locked fiber laser. The timing jitter in ~ 30-m link reduced to 38 attoseconds (as) integrated over bandwidth from 1 Hz 10 MHz via active stabilization which represents significant improvement previously reported performance. Our approach uses all-optical generation synchronization error and accompanying out-of-loop optical detection technique verify
We show that the mathematical structure of Tsallis entropy underlies an important and ubiquitous problem in nonlinear science related to efficient synchronization weakly forced oscillators. The maximization locking range oscillators with use phase models is analyzed general constraints encompass forcing waveform power, magnitude, or area. optimization then recasted as a form maximization. solution these problems shown be direct consequence from Hölder's inequality. resulting new principle...
Compost-bedded pack barns (CBP) are getting huge attention as an alternative housing system for dairy cows due to their beneficial impact on animal welfare. Effective microorganisms (EM) inoculums believed enhance compost quality, improve soil structure and benefit the environment. However, little information is available of incubation with external EM combinations barn environment, quality microbial diversity in CBP. This experiment was carried out investigate effect inoculating different...
A new system for single-shot dual-wavelength digital holographic microscopy with polarization-multiplexing path-shared transmission is presented. The key feature of the optical configuration that interference waves two wavelengths having orthogonal polarization can transmit in same interferometer paths at time, and polarizers to each other are placed front CCD realize recording holograms. correlative filtering algorithm spatial-frequency spectrum holograms reliable efficient configuration....
We numerically investigate the generation of wavelength-tunable few-cycle pulses in visible spectral region through soliton-plasma interactions. found that a He-filled single-ring photonic crystal fiber (SR-PCF), interactions could shift optical spectra propagating to shorter wavelengths. Through adjusting single pulse energy launched into fiber, central wavelength these blueshifting be continuously tuned over hundreds nanometers, while maintaining high conversion efficiency >57%. Moreover,...
Abstract Femtosecond light pulses carrying optical angular momentums (OAMs), possessing intriguing properties of helical phase fronts and ultrafast temporal profiles, enable many applications in nonlinear optics, strong‐field physics, laser micromachining. While generation OAM‐carrying their interactions with matters are intensively studied experiments, 3D characterization beams spatiotemporal domain has, however, proved difficult to achieve. Conventional measurement schemes rely on the use...
A tunable cw Ti:sapphire laser is locked to a self-referenced femtosecond frequency comb generated by an erbium-doped fiber thereby creating single-frequency optical synthesizer. This synthesizer has tuning range of 760-820 nm with absolute uncertainty less than 100 kHz. We demonstrate the precision this measuring several transitions on D2 lines 85Rb and 87Rb using saturated absorption spectrometer.
We prove Iitaka $C_{n,m}$ conjecture for $3$ -folds over the algebraic closure of finite fields. Along way we some results on birational geometry log surfaces nonclosed fields and apply these to existence relative good minimal models -folds.
The double-shifted magnetic hysteresis loops, which are accompanied by the formation of bi-domain state, normally observed after zero field cooling a demagnetized sample or as-deposited ferromagnetic (FM)/antiferromagnetic (AFM) structures. In pioneer works, this phenomenon was explained imprinting FM domain in AFM layer, however interaction between and has never been discussed. work, we loops state [Co 0.3/Ni 0.4i]N/IrMn multilayers with perpendicualr anisotropy. By comparing patterns (Co...
Adiabatic evolution is required in performing quantum information processing tasks and adiabatic speedup often used to avoid decoherence problems for a long time. Here, we add leakage elimination operator (LEO) Hamiltonian the can be obtained. LEO Hamiltonians realized by sequence of periodic zero-energy-change pulses. By using Feshbach partitioning technique, obtain exact control parameters realize different types Furthermore, show that this scheme fault-tolerant against pulse strength...
Spin-orbit torques (SOTs) in Ta/CoFeB/MgO structures are studied by harmonic voltage method. The results indicate that both Slonczewski-like (HSL) and field-like (HFL) effective field enhanced annealing the film stacks with various Ta thicknesses. Investigation of crystallographic phase layers resistance Hall bar devices suggest may induce a transformation from α to β phase, which HSL annealed samples. Current-induced magnetization switching experiments revealed corresponding decrease...
Fresnel incoherent correlation holography (FINCH) can achieve high-precision and non-scanning 3D imaging. However, as a holographic imaging technology, the huge bandwidth requirements amount of data transmitted have always been one important factors limiting its application. In addition, hardware cost pixel array-based CCD or CMOS is very high under resolution specific wavelength conditions. Accordingly, single-pixel (SP-FINCH) compressed method proposed, which replaces array detector with...
Abstract The underlying mechanism of broadband dispersive‐wave emission within a resonance band gas‐filled anti‐resonant hollow‐core fiber is studied. Both numerical and experimental results unveiled that the pump pulse with soliton order ≈3, launched into fiber, experienced two stages compression, resulting in multi‐peak structure emitted spectrum. Over first‐stage sharp increase peak power triggers first time emission, simultaneously causes frequency blue‐shift due to soliton‐plasma...
With the rapid advancement of artificial intelligence and networking, path planning has found widespread applications across various domains, including intelligence, mechanical control, robotics, automotive industry. The A* algorithm is a very common path-planning algorithm. Traditional research mainly focuses on application its combination with other algorithms, while neglecting study itself, such as heuristic function. This article will conduct an in-depth using MATLAB, introduce weighted...
Interfacial Dzyaloshinskii–Moriya interaction (iDMI) receives a lot of attention due to its potential for spintronics devices. The physical understanding the artificial approaches that control strength iDMI remains complicated. In Ta/Pt/CoFeB/MgO/Ta system, D and efficiency damping-like spin Hall torque (DL-SHT) have been quantified utilizing Brillouin light scattering, spin-torque ferromagnetic resonance, magnetoresistance. A linear relationship between DL-SHT was obtained, indicating...