A5100384558- Photorefractive and Nonlinear Optics
- Optical measurement and interference techniques
- Advanced Fiber Laser Technologies
- Optical Coherence Tomography Applications
- Photonic and Optical Devices
- Digital Holography and Microscopy
- Advanced X-ray Imaging Techniques
- Optical Polarization and Ellipsometry
- Spectroscopy Techniques in Biomedical and Chemical Research
- Optical Systems and Laser Technology
- Surface Roughness and Optical Measurements
- Advanced Fiber Optic Sensors
- Waste Management and Recycling
- Ionosphere and magnetosphere dynamics
- Blockchain Technology in Education and Learning
- Translation Studies and Practices
- Chinese history and philosophy
- Robotics and Sensor-Based Localization
- Advanced Optical Sensing Technologies
- China's Ethnic Minorities and Relations
- Gyrotron and Vacuum Electronics Research
- Advanced Optical Imaging Technologies
- Nuclear Physics and Applications
- Solid State Laser Technologies
- Spectroscopy and Chemometric Analyses
He Eye Hospital
2023-2025
Nankai University
2022-2025
San’an Optoelectronics (China)
2024-2025
Hong Kong Polytechnic University
2015-2025
University of Calgary
2023
Huazhong University of Science and Technology
2022-2023
Harbin Institute of Technology
2014-2022
State Grid Corporation of China (China)
2021
Institute of Process Engineering
2020
National University of Defense Technology
2020
The topology of a vehicular ad hoc network (VANET) changes rapidly due to high-speed movement vehicles, so traditional mobile (MANET) broadcast protocol may not work efficiently in VANET. This paper proposes distance-based called Efficient Directional Broadcast (EDB) for VANET using directional antennas. In EDB, only the furthest receiver is responsible forward packet opposite direction where arrives. Besides, repeater located at intersection helps disseminating packets vehicles on other...
In the realm of 3D measurement, photometric stereo excels in capturing high-frequency details but suffers from accumulated errors that lead to low-frequency distortions reconstructed surface. Conversely, light field (LF) reconstruction provides satisfactory geometry sacrifices spatial resolution, impacting detail quality. To tackle these challenges, we propose a stereoscopic measurement (PSLFM) scheme harnesses strengths both methods. We have developed an integrated information acquisition...
Raman imaging technology plays a pivotal role in biomedical research, with the pursuit of higher resolution, faster speed, and larger field view consistently driving development systems. In this work, we propose high-speed wide-field three-dimensional (3D) method based on light microscopy flower-like gap-enhanced tags (F-GERTs). F-GERTs enhanced signals high stability are used to label microbial cell samples, avoiding problem photobleaching. The micro-lens array scientific camera...
This paper presents a disparity pattern-based autostereoscopic (DPA) 3D metrology system that makes use of microlens array to capture raw information the measured surface in single snapshot through CCD camera. Hence, digital model target with measuring data is generated system-associated direct extraction (DEDI) method. The DEDI method highly efficient for performing mapping based on tomography-like operation upon every depth plane defocused excluded. Precise measurement results are provided...
Autostereoscopic 3D measuring systems are an accurate, rapid, and portable method for in situ measurements. These use a micro-lens array to record information based on the light-field theory. However, spatial-angular-resolution trade-off curtails their performance. Although learning models were developed super-resolution, scarcity of data hinders efficient training. To address this issue, novel, best our knowledge, semi-supervised paradigm angular super-resolution is proposed data-efficient...
Raman scattering, as a vibrational spectrum that carries material information, has no photobleaching enables long-duration imaging. spectra have very narrow emission peaks, and multiplex imaging can be achieved by using different scattering peak signals. These advantages make widely used in biology, cytology, medicine, which wider range of application scenarios. However, obtaining three-dimensional (3D) image requires scanning for tens minutes to several hours at present. Therefore, fast...
Due to the explosive development of location-based services (LBS), localization has attracted significant research attention over past decade. Among associated techniques, wireless fingerprint positioning garnered much interest due its compatibility with existing hardware. At present, widespread deployment long-term evolution (LTE) networks and uniqueness information fingerprints, based on LTE is mainstream method for outdoor positioning. However, in order improve accuracy, this needs...
Abstract In this paper, we consider the development and analysis of a new explicit compact high‐order finite difference scheme for acoustic wave equation formulated in divergence form, which is widely used to describe seismic propagation through heterogeneous media with variable density velocity. The fourth‐order accuracy space second‐order time. compactness obtained by so‐called combined method, utilizes boundary values spatial derivatives those are one‐sided approximation. An empirical...
Abstract Toroidal coupling between m / n = 2/1 and 3/1 modes frequently occurs in the J-TEXT, where ( ) is poloidal (toroidal) mode number. These coupled destabilize each other, leading to confinement degradation even triggering a major disruption. This paper presents two control strategies for preventing through application of proper static resonant magnetic perturbation (RMP) field. Experimental results demonstrate that moderate RMP can suppress small, rotating thus prevent modes. The...
Optical diffraction tomography (ODT) is a promising label-free imaging method capable of quantitatively measuring the three-dimensional (3D) refractive index distribution transparent samples. In recent years, partially coherent ODT (PC-ODT) has attracted increasing attention due to its system simplicity and absence laser speckle noise. Quantitative phase (QPI) technologies represented by Fourier ptychographic microscopy (FPM), differential contrast (DPC) intensity (IDT) need collect several...
We have demonstrated the recovery of distorted images by a phase plate to nearly their original qualities under refection configuration. This is made possible utilizing difference-frequency generation in bulk KTiOPO(4) (KTP) crystal and an AFB-KTP composite. In such geometry, both input phase-conjugated waves propagate through for round trip. They are reflected object, which can be far away from imaging system, captured cameras. Therefore, configuration much more practical eventually...
We report on laser performance of ceramic Yb:YAG and single crystal Tm:YAG double-clad crystalline fiber waveguide (CFW) lasers towards the goal demonstrating design manufacturing strategy scaling to high output power. The component is a CFW, with RE<sup>3+</sup>:YAG (RE = Yb, Tm respectively) core, un-doped YAG inner cladding, spinel or sapphire outer cladding. Laser CFW has been demonstrated 53.6% slope efficiency 27.5-W stable power at 1030-nm for 31.6% 46.7-W 2019-nm respectively....
The majority of encoder signal process circuits only support one type the specific photoelectric encoder, either absolute or incremental encoder. In order to realize compatibility for both two types encoders simultaneously, a novel circuit based on FPGA is presented in this paper. Firstly, series universal functions are analyzed and demonstrated. On basis, approaches multiplexing interfaces designed verified by simulation. Importantly, solved pins IC chip terms hardware interface. As...
Three-dimensional compound measurement within a volume of interest is great importance in industrial manufacturing and the biomedical field. However, there no current method that can simultaneously perform spatial localization 3D non-scanning manner as well identification material volume. In this paper, an Autostereoscopic-Raman Spectrometry-based (ARS) three-dimensional system proposed. The target object large depth range initially positioned by autostereoscopic method, then accurate...
Clarifying the aberrations arising from freeform surfaces is of great significance for maximizing potential in design optical systems. However, current precision calculating aberration contribution surface terms non-zero field view insufficient, impeding development imaging systems with larger view. This paper proposes a high-precision analysis based on nodal theory, particularly points. Accurate calculation formulas generated by Zernike are presented. Design examples illustrate that error...
Precisely sensing the light field direction information plays essential role in fields of three-dimensional (3D) imaging, sensing, target positioning and tracking, remote etc. It is thrilling to find that optical fiber can be used as a component due its high sensitivity, compact size, strong resistance electromagnetic interference. According core principle few-mode output speckle pattern sensitive change incident direction, variation characteristics further investigated this research study....
Objective visual quality evaluation using optical human eye models with actual aberration characteristics provides an important reference for clinical vision diagnosis and treatment. To ensure accurate evaluation, it is typically necessary to precisely introduce aberrations into the model by adjusting model’s surface shape. However, detailed relationship between shapes unclear, causing challenges in introduction. In this paper, a method that enables introduction of target objective proposed....
Quantitative phase imaging (QPI) has become a valuable tool in the field of biomedical research due to its ability quantify refractive index variations live cells and tissues. For example, three-dimensional differential contrast (3D DPC) uses through-focus images captured under different illumination patterns deconvoluted with computed 3D transfer function (PTF) reconstruct index. In conventional DPC semi-circular illumination, partially spatially coherent often diminishes contrast,...