A5018898932- Solid State Laser Technologies
- Photorefractive and Nonlinear Optics
- Advanced Fiber Laser Technologies
- Nonlinear Optical Materials Research
- Laser Design and Applications
- Luminescence Properties of Advanced Materials
- Organic Light-Emitting Diodes Research
- Nonlinear Optical Materials Studies
- Glass properties and applications
- Laser-Matter Interactions and Applications
- Organic Electronics and Photovoltaics
- Acoustic Wave Resonator Technologies
- Conducting polymers and applications
- Quantum Dots Synthesis And Properties
- Silicon Carbide Semiconductor Technologies
- Photonic and Optical Devices
- Supercapacitor Materials and Fabrication
- Gas Sensing Nanomaterials and Sensors
- Crystal structures of chemical compounds
- Ferroelectric and Piezoelectric Materials
- Electrocatalysts for Energy Conversion
- X-ray Diffraction in Crystallography
- Silicon Nanostructures and Photoluminescence
- Semiconductor Quantum Structures and Devices
- Nanowire Synthesis and Applications
Xinyu University
2010-2025
Huazhong University of Science and Technology
2020-2025
Central Hospital of Wuhan
2025
Kunming Metallurgical Research Institute
2024
Fudan University
2024
Huashan Hospital
2024
Yanshan University
2023
Jiangxi Normal University
2006-2022
Hua Yuan Group (China)
2020-2021
China Huaneng Group Co., Ltd. (China)
2020-2021
A disadvantage of organic nonlinear optical (NLO) materials is often their low physico-chemical stability. One approach to overcoming this demonstrated by β-BNPT-DTO, synthesized the authors and shown in Figure, which S…S intermolecular interactions confer The main emphasis article, however, on semiorganic NLO crystals that combine advantages inorganic materials.
We have experimentally demonstrated a dual-wavelength synchronously mode-locked Nd:CNGG laser based on the semiconductor saturable absorber mirror technique. Mode locking was achieved simultaneously two gain bands of crystal that central wavelength separation 2.4 nm. The fundamental pulse train has repetition rate 88 MHz and duration 5 ps, with an average output power approximately 90 mW. Autocorrelation measurements show each pulses consists quasi-periodic beat 660 fs width 0.63 THz rate.
Abstract An exceptional phenomenon has been observed that SO 2 and NO x in flue gas can be effectively adsorbed over activated carbon with a surprising capacity at cold temperatures the presence of oxygen. In this study, adsorption characteristics 80, 20, 0, − 20 is experimentally investigated. Without oxygen, negligible. oxidized to which leads co-adsorption NO/NO within bed. Catalytic oxidation significantly enhanced temperatures, leading an extraordinary increase NO. With initial...
Electrocatalytic materials with dual functions of oxygen reduction reaction (ORR) and evolution (OER) have received increasing attention in the field zinc-air batteries (ZABs) research. In this study, bifunctional CoNC@NCXS catalysts were prepared by anchoring Co N co-doped CoNC on N-doped carbon xerogel sphere (NCXS) based spatially confined domain effect in-situ doping technique. exhibited excellent ORR/OER activity alkaline electrolytes ORR onset potential 0.99 V, half-wave (E1/2) 0.78 V...
Passive Q-switching operation with a class of Nd:GdxY1−xVO4 crystals has been demonstrated. Compared to Nd:YVO4 and Nd:GdVO4, the pulse energy produced Nd:Gd0.64Y0.36VO4 under certain conditions was found be enhanced by factors 6.0 2.5, while peak power 14.7 3.6, respectively. At incident pump 9.6 W, 1.3 W average output obtained, energy, power, repetition frequency being 166 μJ, 24.5 kW, 7.7 kHz,
We report a red fluorescent material of 3-(dicyanomethylene)-5,5-dimethyl-1(4-dimethylamino-styryl)cyclohexene (DCDDC) and its use as emitter or dopant in tris-(8-hydroxyquinoline) aluminum based electrolumiescent (EL) devices. The DCDDC was synthesized by simple “one-pot” reaction shows bright photoluminescence with peak wavelength at 650 nm. EL properties double-layer light-emitting diodes indium tin oxide (ITO)/poly(N)-vinylcarbazole...
Barium tungstate (BaWO4) is employed to achieve efficient stimulated Raman scattering conversion in a compact diode-pumped actively Q-switched Nd:YAG laser. With an incident pump power of 9.2 W, 1.56 W 1181 nm first-Stokes average output was generated at pulse repetition rate 20 kHz, corresponding optical-to-optical efficiency 16.9%.
The synthesis, structure, and single- two-photon spectroscopic properties of a series pyrimidine-based (bent-shaped) molecules are reported. All these stable heterocyclic compounds fully characterized, exhibit intense excited fluorescence (SPEF TPEF) over wide spectral range from blue to red, with the peak position SPEF being basically same as that TPEF. well-conjugated pi-systems, observed crystal indicate charge transfer feature ground state. Meanwhile, theoretical experimental studies...
An efficient and compact diode-pumped continuous-wave Yb:GdVO4 laser is demonstrated, generating an output power of 4.0 W with optical conversion efficiency 61% a slope as high 78%. With increasing pump the polarization changes from sigma to pi, while in certain intermediate range two states coexist different emission wavelengths.
A disordered Nd:SrGdGa3O7 (Nd:SGGM) laser crystal was grown by the Czochralski method. The space group and effective segregation coefficient of Nd3+ were determined to be P4¯21m 1.36, respectively. Thermal properties, including average linear thermal expansion coefficient, diffusivity, specific heat, conductivity measured. It found that increases with increasing temperature, indicating glasslike behavior. Sellmeier’s equations fitted measuring refractive indices in range 253–2325 nm....
Oxygen reduction reaction (ORR) has attracted considerable attention for clean energy conversion technologies to reduce traditional fossil fuel consumption and greenhouse gas emissions. Although platinum (Pt) metal is currently used as an electrocatalyst accelerate sluggish ORR kinetics, the scarce resource high cost still restrict its further scale-up applications. In this regard, biomass-derived carbon electrocatalysts have been widely adopted electrocatalysis in recent years owing their...
Perovskite materials have attracted extensive attention because of their superior performance in the fields photoelectric detection, photovoltaics, light-emitting diodes, metal–air batteries, etc. However, development and application field X-ray detectors not been reviewed. In this paper, research on perovskite-based is analyzed using bibliometric method. This analysis sample includes literature from 1997 to present. addition, status scintillators direct under different crystallization...
The absorption spectra of the 0.5at.% and 1at.% Co: LaMgAl11O19 (LaMg1-xCoxAl11O19, x=0.005 0.01, abbreviated as Co:LMA) crystals were measured at room temperature, results show that LMA have two bands, band located 1030-1660 nm can be used for a passive saturable absorber Q switch 1.3-1.6mum laser. pulsed laser output LD-end-pumped Nd:GdVO4 1.34mum was demonstrated first time by using 0.5 at.% Co:LMA crystal switch. maximum average power 500 mW obtained under pumping 25 W. shortest pulse...
We report the room-temperature spectroscopic properties and continuous-wave laser operation of a new disordered crystal, Yb:Ca(3)(NbGa)(2-x)Ga(3)O(12). The peak absorption cross section is 3.3x10(-20) cm(2) at 973.5 nm; emission band important for action centered 1028 nm with 2.5x10(-20) cm(2). By diode end pumping, an output power 1.9 W was achieved slope efficiency 28.5%.
A series of laser crystals Nd:LuxGd1−xVO4 (x=0.14,0.32,0.50,0.61,0.70,0.80) was grown by the Czochralski method. The thermal properties, including average linear expansion coefficients, diffusion specific heats, and conductivities, mixed were obtained. material constants Ms for stress resistance figure calculated showed that fracture limits should be comparable with Nd:YVO4. polarization absorption spectra from 240to1000nm measured at room temperature cross sections 809nm calculated. Using...
Undoped ZrO2 nanocrystals were annealed in open air from 100 °C to 1300 °C. X-ray diffraction and transmission electron microscope used study the structure change grain growth. Both methods reveal that size has very slight increase after annealing up 900 Positron annihilation measurements a high concentration of vacancy defects which most probably exist boundary region. Thermal above 500 causes recovery these defects, at 1200 °C, them are removed. Room temperature ferromagnetism is observed...
The hybrid organic–inorganic halide perovskite solar cells (PSCs) have attracted considerable attention in the photovoltaic community during last decade due to unique properties, such as high absorption coefficient, solutionable fabrication, and compatibility with roll-to-roll technology. A certified power conversion efficiency of PSCs 25.2% has been obtained, approaching levels silicon cells, copper indium gallium selenide (CIGS), cadmium telluride (CdTe) thin-film cells. However, device...
Cubic boron nitride nanocrystals with particle sizes of 25 nm have been synthesized at low temperature and pressure by the benzene thermal method. The X-ray diffraction, infrared absorption spectrum, photoelectron select-area electron diffraction pattern agree very well, they confirm that main phase in sample is cubic (see peaks marked ·).