A5101533254- Luminescence Properties of Advanced Materials
- Advanced Condensed Matter Physics
- Solid State Laser Technologies
- Quantum and electron transport phenomena
- Physics of Superconductivity and Magnetism
- Laser Design and Applications
- Optical Polarization and Ellipsometry
- Nonlinear Dynamics and Pattern Formation
- Chaos control and synchronization
- Perovskite Materials and Applications
- Magnetic and transport properties of perovskites and related materials
- Ga2O3 and related materials
- Neural Networks Stability and Synchronization
- Image Enhancement Techniques
- Spectroscopy and Chemometric Analyses
- Remote Sensing in Agriculture
- Spectroscopy and Laser Applications
- Inorganic Fluorides and Related Compounds
- Boron and Carbon Nanomaterials Research
- Carbon Nanotubes in Composites
- Catalysis and Oxidation Reactions
- Mechanical and Optical Resonators
- 2D Materials and Applications
- Advanced ceramic materials synthesis
- Multiferroics and related materials
Xidian University
2023-2024
Anyang Normal University
2012-2019
Anyang Institute of Technology
2019
Anhui University
2009-2011
Shanghai University
2005-2006
General Electric (United States)
1976-1979
Broad-band vacuum ultraviolet (VUV) fluorescence has been observed in Nd3+-, Er3+-, and Tm3+-doped LaF3, YF3, LiYF4, LuF3 by electron-beam VUV excitation. The excitation spectra indicate a large Stokes shift (≳5000 cm−1) high quantum yield of 0.8. threshold power for laser action these crystals optical pumping estimated. Using molecular H2 as source, system which is tunable from 1650 to 2600 Å could be constructed.
We present a comprehensive review on the recent progress of graphene vdW heterostructure photodetectors and give further perspectives in this emerging field.
We have measured the vacuum-uv excitation spectra of interconfiguration ($5{d}^{1}4{f}^{n\ensuremath{-}1}$ to $4{f}^{n}$) and intraconfiguration ($4{f}^{n}$ transitions Nd-, Er-, Tm-doped La${\mathrm{F}}_{3}$, Y${\mathrm{F}}_{3}$, Lu${\mathrm{F}}_{3}$, LiY${\mathrm{F}}_{4}$. In Nddoped samples observed differ completely from those transitions. The difference is also striking in Er- samples. Nd-doped can be explained by crystalfield splitting a $5d$ state, corresponding for being more...
Broad-band uv flurescence is reported for LaF2 : Ce3+ (2760–3120 Å) and LuF3 (2880–3220 Å). The five-peak excitation spectrum expected the 5d state of in a noncubic crystal field observed. fluorescence quantum yields LaF3 1% 0.1% are 0.9 0.82, respectively. Estimates threshold power lasing action suggest that laser system tunable from 2760 to 3220 Å feasible with noble-gas–halide lasers as pumping sources.
The vortex charge for a thin mesoscopic superconducting ring is investigated by the phenomenological Ginzburg-Landau theory with de Gennes boundary condition. $H\text{\ensuremath{-}}{R}_{i}$ phase diagrams distributions are given different surface extrapolation lengths ${b}_{i}$ and ${b}_{o}$ on inner side outer side, respectively. Five kinds of distribution obtained in total. Generally, sample negatively charged negative each enhancement superconductivity, whereas system exhibits positive...
We have observed 5d-to-5d energy transfer from trivalent Tm to Nd in YF3 and LuF3 Ce YF3. In a : 5 mol% 1 sample, the probability of Tm3+ Nd3+ was determined be 0.94. The has possibility broadening optical pumping bands LiYF4 Ce3+ laser other systems involving 5d14f n−1 4f n transition rare-earth doped fluorides.
A detailed theoretical study of the optical properties β-Si3N4 has been carried out by means first-principles calculations using plane-wave pseudo-potential method with generalized gradient approximation for exchange and correlation functional. The calculated maximum absorption coefficient is 312000, which in good agreement other result. can be used as a photo-electronic material because its curve an abrupt limit at low energy region. light beam frequency 7eV～15eV easily traverse crystal....