A5101850189- Photonic Crystal and Fiber Optics
- Advanced Fiber Laser Technologies
- Advanced Fiber Optic Sensors
- Photonic and Optical Devices
- Optical Network Technologies
- Photonic Crystals and Applications
- Orbital Angular Momentum in Optics
- Smart Grid Security and Resilience
- Glass properties and applications
- Luminescence Properties of Advanced Materials
- Advanced Battery Technologies Research
- Physical Unclonable Functions (PUFs) and Hardware Security
- Quantum optics and atomic interactions
- Liquid Crystal Research Advancements
- Nonlinear Photonic Systems
- Solid State Laser Technologies
- Topological Materials and Phenomena
- Advancements in Battery Materials
- Photorefractive and Nonlinear Optics
- Semiconductor Lasers and Optical Devices
- Laser-Matter Interactions and Applications
- Building Energy and Comfort Optimization
- Urban Heat Island Mitigation
- Radiation Effects in Electronics
- Synthetic Aperture Radar (SAR) Applications and Techniques
Nankai University
2015-2024
National Earthquake Response Support Service
2023-2024
Shenyang University of Technology
2022-2024
South China University of Technology
2018-2024
China Electric Power Research Institute
2022-2024
North China Electric Power University
2022-2024
Guangzhou Automobile Group (China)
2024
Guangxi University
2019-2023
Xi'an Jiaotong University
2023
Key Laboratory of Guangdong Province
2020-2021
Array of light: Nanostructured arrays NaMF4 (M=rare earth metal) can be prepared by a hydrothermal method. The consist nanoparticles with well-controlled morphologies (tubes, disks, or rods), phases (cubic hexagonal), and sizes (80–900 nm). Multicolor upconversion fluorescence is realized in NaYF4 codoped Er3+ Yb3+ Tm3+ (see picture). Supporting information for this article available on the WWW under http://www.wiley-vch.de/contents/jc_2002/2007/z702519_s.pdf from author. Please note:...
We report the first experimental demonstration of localized flat-band states in optically induced Kagome photonic lattices. Such lattices exhibit a unique band structure with lowest being completely flat (diffractionless) tight-binding approximation. By taking advantage linear superposition eigenmodes lattices, we demonstrate high-fidelity transmission complex patterns such two-dimensional pyrochlore-like structures. Our numerical simulations find good agreement observations, upholding...
MAX phase materials, exhibiting excellent antioxidation, corrosion resistance and high electrical optical conductivity, attract much attention. The nonlinear properties of the Ti2AlC was demonstrated by measuring saturable absorption Ti2AlC- polyvinyl (PVA) film. modulation depth Ti2AlC-PVA film is calculated to be 2.21%. Stable Q-switched mode-locked pulses train were achieved in Erbium-doped fiber ring cavity using as a absorber. maximum single pulse energy laser 92.8 nJ, width 680 fs....
We demonstrated saturable absorbers (SAs) based on silver nanoparticles (SNPs) by depositing them the end facet of fiber. The SNPs-based SAs showed large modulation depths and high maximum transmittances. With one SA, we built a passively <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$Q$ </tex-math></inline-formula> -switched erbium-doped fiber laser (EDFL). Self-started -switching at 1564.5 nm in EDFL...
Topological properties of lattices are typically revealed in momentum space using concepts such as the Chern number. Here, we study unconventional loop states, namely, noncontractible states (NLSs) and robust boundary modes, mediated by nontrivial topology real space. While play a key role understanding fundamental physics flatband systems, their experimental observation has been hampered because challenge realizing desired conditions. Using laser-writing technique, optically establish...
We report the experimental observation and theoretical analysis of thermo-optic effects in high-Q on-chip lithium-niobate (LN) microdisks. find that resonance transmission dip a LN microdisk was broadened or compressed when wavelength input laser tuned to shorter longer wavelengths at sweeping speed 4.8 pm/s. When shifted with fast rate (4.8 nm/s), tendencies change shape reverse completely. An oscillatory behavior spectra also observed slowly wavelengths. The results were successfully...
Due to the heat pipes' transient conduction, phase change and fluid dynamics during cooling/heating with high frequency charging/discharging of batteries, it is crucial investigate in depth experimental dynamic thermal characteristics such complex transfer processes for more accurate analysis design a BTMS. In this paper, use ultra-thin micro pipe (UMHP) management lithium-ion battery pack EVs explored by experiments reveal UMHP pack. The cooling performance evaluated under different...
AbstractThis work considers an innovation-based attack policy in cyber-physical systems with multiple channels. The linear deception only allows the partial channels to be compromised at each step due energy constraint Compared existing results single channel, matrices and positions are time-varying this work. For multi-channel under constraint, is designed determine optimal locations degrade estimation performance of system most extent. Then, it proved that achieving equivalent solving a...
Graphene saturable absorbers (GSAs) have been widely applied in ultra-fast mode-locked fiber lasers. Thanks to the broadband advantage of graphene, we theoretically and experimentally demonstrate variation modulation depth GSA by employing effect cross absorption modulation. This method provides an easy efficient way modulate characteristics GSA. By varying power, realize all-fiber fundamental laser a harmonic with tunable output pulse width. Results show that widths two lasers can be tuned...
The bulk photovoltaic (BPV) effect in ferroelectric liquid crystals is of increasing scientific interest owing to its great potential for light-energy conversion. nematic phase exhibits a huge spontaneous polarization that can be aligned preferred direction. In this Letter, we investigate the tensorial properties BPV planarly crystalline material RM734. A steady-state short-circuit photocurrent ~160 pA and an open-circuit photovoltage ~50 mV were observed cell with thickness 5.5 µm under...
An optimized sol–gel process was developed to fabricate 1D photonic bandgap structures. Several erbium-doped Fabry–Perot microcavities were prepared and characterized. The thickest sample contained two Bragg mirrors, each having 12 distributed reflector periods of alternating silicate glass titania layers. total thickness this reached ~12 µm. Er3+ photoluminescence spectra at 1.5 µm measured for the microcavities. A quality factor 250 an enhancement 96 times have been reached. processing...
We propose a new kind of reconfigurable topological valley photonic crystal (TVPC), and novel waveguide can be formed by constructing domain wall between two TVPCs with opposite valley-Chern indices. The mode in the composite TVPC has large group refractive index. A topologically protected coupled cavity system is then designed introducing hexagonal ring at center straight combined TVPC, which narrow plasmon induced transparency window rises 3.8848 GHz Q-factor 1387 maximum index as high...
We demonstrate an all-optical Q-switcher based on graphene saturable absorber (GSA). Due to the cross absorption modulation (XAM) effect in graphene, we can change transmittance of signal light periodically by introducing a train laser pulses into graphene. This allows controlling Q-factor cavity. has many advantages such as all-fiber structure, modulation, broadband applications. With this Q-switcher, have successfully fabricated actively Q-switched ytterbium-doped fiber laser. The pulse...
We propose and demonstrate a new method for creation of fan-shaped optical vortex beams by rational phase modulation assembly based on well-known conical phase. Our design is different from the previously proposed generation power-exponential beams. Such unconventional consist multiple spiral beam filaments (as fan blades), their overall size angle can be readily controlled adjusting parameters. Experimentally, two examples applications are illustrated with such beams: one clearing through...