A5101602686- Semiconductor Quantum Structures and Devices
- Photonic and Optical Devices
- Advanced Fiber Laser Technologies
- Electromagnetic Scattering and Analysis
- Photorefractive and Nonlinear Optics
- Advanced Antenna and Metasurface Technologies
- Quantum optics and atomic interactions
- Advanced Photocatalysis Techniques
- GaN-based semiconductor devices and materials
- Magnetic Field Sensors Techniques
- Advanced Fiber Optic Sensors
- Spectroscopy and Laser Applications
- Magneto-Optical Properties and Applications
- Photonic Crystal and Fiber Optics
- Advanced Nanomaterials in Catalysis
- Gas Sensing Nanomaterials and Sensors
- Microwave Imaging and Scattering Analysis
- Carbon Dioxide Capture Technologies
- Media Influence and Health
- Advanced Semiconductor Detectors and Materials
- Strong Light-Matter Interactions
- Computational Geometry and Mesh Generation
- Metallic Glasses and Amorphous Alloys
- Advanced SAR Imaging Techniques
- Electromagnetic Simulation and Numerical Methods
Shanghai Institute of Optics and Fine Mechanics
2024
Chinese Academy of Sciences
2001-2024
Chongqing Jiaotong University
2022-2024
Southwest University of Science and Technology
2023
Wuhan University
2018-2021
Institute of Physics
1996-2017
Peking University
1988
This study focused on creating tetraethylenepentamine (TEPA) modified copper hydroxyl phosphate (Cu2(OH)PO4) adsorbents via physical impregnation. The TEPA-modified Cu2(OH)PO4 were analyzed for structure and characteristics through SEM, XPS, TGA, N2 adsorption–desorption studies. effects of different parameters (TEPA contents, temperatures, flow rates CO2 concentrations) cyclic stability evaluated. Kinetics, thermodynamics density functional theory (DFT) calculations employed to understand...
We hypothesized that photocatalysts with a low band gap could be useful in the sterilization of ceramic tiles natural environments toilets using light those settings. Certain can produce reactive oxygen species (ROS) under illumination, which turn are bactericidal. The properties BiOBr-containing were tuned by creating junctions and heterostructures Ag InVO4 studied respect to their bactericidal effect dispersion. mechanism was through experiments active captured via electron paramagnetic...
We demonstrate that through inserting a short length of highly birefringent small-core photonic crystal fiber (Hi-Bi SC-PCF) into soliton laser, the nonlinear polarization rotation effect in this laser can be manipulated, leading to continuous tuning output pulse parameters. In experiments, we observed by adjusting state light launched Hi-Bi SC-PCF and varying cavity attenuation, spectral width continuously tuned from ∼7.1 ∼1.7 nm, corresponding pulse-width-tuning range ∼350 fs ∼1.56 ps....
Abstract High-precision line intensities are of great value in various applications, such as greenhouse gas metrology, planetary atmospheric analysis, and trace detection. 
Here we report simultaneous measurements cavity-enhanced absorption dispersion spectroscopy the prototype molecule $^{12}$C$^{16}$O using same optical resonant cavity. Nine lines were measured R branch $v=3-0$ band. The spectra fitted separately with speed-dependent Voigt profiles, obtained by two methods agree...
The resonant photorefractive devices using low temperature AlGaAs/GaAs multiple-quantum-well structures in a parallel field geometry are demonstrated. samples semi-insulating as grown. AsGa-related defects incorporated into the during growth provide required deep centers. No proton implantation, Cr doping, or annealing is needed for device fabrication. In wave mixing experiment, an output diffraction efficiency higher than 0.84% and two-wave-mixing gain of more 3000 cm−1 obtained under dc...
The 256×1 linear array of multiple quantum wells infrared photodetector (QWIP) is designed and fabricated for the peak response wavelength at λ P = 14.6 μm. spectral width bigger than 2.2 two-dimensional (2D) diffractive coupling grating has been formed on top QWIP photosensitive pixel radiation to detective layers. performance device V B 3 T 45 K responsibility 4.28×10−2 (A/W), blackbody detectivity D b* 5.14×109 (cm·Hz1/2/W), * 4.24× 1010 (cm·Hz1/2/W). sensor pixels are connected with CMOS...
For a long time, due to the difficulty of obtaining accurate propagation trajectories, research on creeping waves is limited canonical geometries or simple targets, which leads situation that it relatively mature in theoretical waves, while practical application scope for complex targets narrow. In this paper, thorough electromagnetic computation method planar mesh model systematically proposed. This approach broadens field applications generality models engineering. The contents consist...
We demonstrate a compact ultrafast fiber laser system that can deliver 1.87 GHz pulse train at 1550 nm with energy of 52 pJ and an ultrashort duration 57 fs. While acousto-optic mode-locking was used as the seed light source rate, stage Er-doped amplifier boosted power to ∼320 mW, giving ∼170 pJ. Then, compression setup constructed, providing high ratio ∼10 total efficiency ∼32%. In cascaded configuration, multiple samples alternately normal anomalous dispersion were fused together,...
Cause of increased competition in sports branding, the main issue for powerful marketing is to understand fan psychology. The attachment a their team and athletes has much do with purchasing behavior brand loyalty. For that reason, understanding those psychological dynamics necessary when trying figure out an effective strategy. study shall now explore how brands utilize frameworks, such as Psychological Continuum Model, nurture emotional connections will lead Case studies are provided...
We investigate the relationship between beam intensity and four-wave mixing diffraction efficiency of longitudinal-field multiple-quantum-well (LMQW) photorefractive device grown at low temperature. A optimum is found. also explain different mechanisms effect on LMQW transverse-field MQW device. Some advice how to improve given.
At a medium substrate temperature of 400 °C and lower As flux, we have grown an ultrafast AlGaAs/GaAs photorefractive multiple quantum well (MQW) structure by molecular beam epitaxy. The as-grown sample exhibits strong effect under the transverse Frantz–Keldysh geometry. A peak electroabsorption 2100 cm−1 is measured in 11 kV/cm dc electric field, diffraction efficiency can be 1.2%. After postgrowth annealing, becomes weak disappears samples annealed above 700 °C. Using optical transient...
Using a modified method for measuring photorefractive two-wave mixing gain, we presented the experimental demonstration of nonreciprocal energy transfer during under an external magnetic field. The is observed with gain approaching 164 cm−1 and showed characteristics nonlinearity saturation. A simple model resonant tunneling ultrafast carrier lifetime was proposed to explain these results.
Photocurrent spectrum of GaAs/AlGaAs superlattice at T=77K was measured.A strong photocurrent peak ν=1589cm-1 and several weak peaks ν=1779,2129 2401cm-1 were observed.It believed that these are relevant to waving electron in superlattice.The calculated positions on the basis theory good agreement with experimental results.
Coherent optical communications systems are of higher sensitivity than that in employing the direct detection. However, interferences such as wavefront distortion and random vibration polarization caused by turbulent atmosphere limit development terrestrial coherent wireless system. This paper presents a novel heterodyne system method based on grating writing reading multiple-quantum-well device (MQW). The MQW, new generation photoelectric developed 1990s, is attractive features including...
We hypothesized that photocatalysts with a low band gap could be useful in the sterilization of ceramic tiles natural environments toilets using light those settings. Certain can produce reactive oxygen species (ROS) under illumination, which turn are bactericidal. The properties BiOBr-containing were tuned by creating junctions and heterostructures Ag InVO4 studied respect to their bactericidal effect dispersion. mechanism was through experiments active captured via electron paramagnetic...
The solid-solid phase transformation of ε-CL-20 induced by external conditions is one the bottlenecks limiting widespread applications CL-20-based energetic materials. Herein, we report investigation on influence solvent polarity behavior both theoretically and experimentally. Density functional theory (DFT) calculation was performed to evaluate possibility organic molecules from perspective electronic structure molecular variations. Additionally, experimental study 1,2-dichloroethane,...