A5103167051- Advanced Fiber Optic Sensors
- Advanced X-ray Imaging Techniques
- Photonic and Optical Devices
- Ion-surface interactions and analysis
- X-ray Spectroscopy and Fluorescence Analysis
- Terahertz technology and applications
- Advanced X-ray and CT Imaging
- Medical Imaging Techniques and Applications
- Semiconductor Lasers and Optical Devices
- Particle Accelerators and Free-Electron Lasers
- Magneto-Optical Properties and Applications
- Electron and X-Ray Spectroscopy Techniques
- Nuclear reactor physics and engineering
- Advanced Measurement and Metrology Techniques
- Optical Network Technologies
- Advanced Fiber Laser Technologies
- Spectroscopy and Laser Applications
- Advanced Electron Microscopy Techniques and Applications
- Optical Systems and Laser Technology
- Geophysics and Sensor Technology
- Optical Coatings and Gratings
- Nuclear Materials and Properties
- Nuclear materials and radiation effects
- Atomic and Molecular Physics
- Traumatic Ocular and Foreign Body Injuries
Beihang University
1996-2024
Harbin Institute of Technology
2024
Huazhong University of Science and Technology
2024
Chinese Academy of Sciences
2007-2023
Shanghai Institute of Applied Physics
2007-2023
University of Chinese Academy of Sciences
2023
Chinese Academy of Medical Sciences & Peking Union Medical College
2022
Thermal Power Research Institute
2016
Key Laboratory of Nuclear Radiation and Nuclear Energy Technology
2015
Shenyang Ligong University
2014
Optical vortices with spin and orbital angular momentum (SAM OAM) states offer multiple degrees of freedom for manipulating optical fields thus enable great potentials in information processing. Recently, the metasurface has become an important platform vortex beam generation steering. However, strong spin–orbit interaction on such metasurfaces usually leads to locked OAM generation, which limits complete control state light. Here, we propose solve this constraint using geometric phase...
To obtain accurate distributions of trace elements in biomedical samples nondestructively, the problems on absorption correction and radiation dose are confronted X‐ray fluorescence computed tomography. In this paper, absorption‐corrected ordered subsets expectation maximization (AC‐OSEM) algorithm is developed to solve these problems. Simulation results show that AC‐OSEM‐based tomography when only incident attenuation map known relatively fewer projections provided. addition, for samples,...
The fiber optic gyroscope (FOG) suffers from the excess relative intensity noise (RIN) caused by broadband light source, which significantly impacts angular random walk (ARW) of FOG. existing suppression methods for RIN usually require complex configuration or devices with big volume, and thus are not suitable practical applications especially in small-sized FOGs. What is more, as key parameters components, that determine effects RIN, corresponding impacting mechanisms clarified, there no...
The ordered-subsets expectation maximization algorithm (OSEM) is introduced to X-ray fluorescence computed tomography (XFCT) and studied; here, simulations experimental results are presented. simulation indicate that OSEM more accurate than the filtered back-projection algorithm, it can efficiently suppress deterioration of image quality within a large range angular sampling intervals. Experimental both an artificial phantom cirrhotic liver show with satisfying interval could be improved...
For the application of K connector (K103F) at Ka-band, many problems exist, due to complex method installation.In this paper, test fixture is simplified, and performance section improved with Electromagnetic bandgap (EBG) structure.Simulation results are presented for connection structure EBG; plots input reflection geometrical physical parameters reported commented on.
Enhanced ion beam etching and chemical of sapphire damaged by implantation have been investigated. In our experiments an amorphous layer or a were produced respectively high-dose yttrium platinum implantation. Rutherford backscattering spectrometry channelling (RBS-C) was used to analyse the material removed etching. For 500 eV Ar etching, rate for 1.5 times faster than single-crystalline sapphire. etchant acid solution HCI-HF-. Etching 10 min 150 nm thick layer, while only about 62...
X-ray phase contrast microscopy (XPCM) achieves the high imaging of low electron density materials with spatial coherence peculiarity X-rays. Considering that ginsengs are mainly composed C, H, O, N and other low-Z elements, XPCM is an ideal tool to nondestructively investigate characteristic microstructures in principle. Owing higher fluxes luminance third generation synchrotron radiation facility, it can present clearer finer better temporal resolutions. In this paper, wild ginseng ware...
A method for analysing chemical mixtures quantitatively with terahertz time domain spectroscopy is proposed. The experimental results demonstrate the feasibility of this technique. Transmission coefficient THz wave at sample surface taken into account to improve analytic precision. Isomer are chosen as samples. Compared similar techniques, precision could be improved evidently in method.
In order to study the critical collision speed of light flash generated by strong shock natural dolomite plate, we use optical fiber transient pyrometer combined with two-stage gas gun loading system, experiments were performed under four kinds experimental conditions. Each experiment used 1 set probe, and probe is installed directly at point. The relationships between intensity time are obtained through original data calibration. results show that gradually weaken decreasing given arranged...
With the spatial coherence of X-rays and high flux brightness 3rd generation synchrotron radiation facility, X-ray phase contrast microscopy (XPCM) at Shanghai Synchrotron Radiation Facility (SSRF) can provide resolution dynamic imaging low electron density materials in principle. In this paper, we investigated cavitation water-refilling processes rice bamboo leaves utilizing XPCM SSRF. The occurrence xylem was recorded vivo. study also revealed that under different dehydration conditions,...
Abstract A novel solution to twin-image disturbance in in-line X-ray holography is presented. By computer simulation, this two-hologram-based digital way proved be efficient, while conditions relating experiments are taken into account.
To investigate light flash produced during hypervelocity impact in the laboratory, we have conducted a series of experiments on two-stage gas gun at different velocities and same angle. Light were acquired through optical fiber pyrometer measurement syste m whole physical process impact, Experimental results showed that maximum intensity decreases with velocity increasing, should exist critical for polycarbonate projectile impacting natural dolomite plate, which may be between 2.52 km/s 4.21...