A5101669324- Advanced Optical Sensing Technologies
- Photoacoustic and Ultrasonic Imaging
- Advanced Fiber Optic Sensors
- Optical measurement and interference techniques
- Spectroscopy and Laser Applications
- Structural Health Monitoring Techniques
- Acoustic Wave Resonator Technologies
- Ocular and Laser Science Research
- Ultrasonics and Acoustic Wave Propagation
- Underwater Acoustics Research
- Advanced Sensor and Control Systems
- Remote Sensing and LiDAR Applications
- Oil Spill Detection and Mitigation
- Nanoplatforms for cancer theranostics
- Gas Sensing Nanomaterials and Sensors
- Mechanical and Optical Resonators
- Advanced Measurement and Metrology Techniques
- Sensor Technology and Measurement Systems
- Photonic and Optical Devices
- Optical Wireless Communication Technologies
- Image Processing Techniques and Applications
- Spectroscopy Techniques in Biomedical and Chemical Research
- Water Quality Monitoring Technologies
- Advanced Photocatalysis Techniques
Huazhong University of Science and Technology
2020-2024
Southeast University
2015
Nanyang Technological University
2013
Sunnyvale Public Library
1996
The Brillouin scattering spectrum has been used to investigate the properties of a liquid medium. Here, we propose an improved method based on double-edge technique obtain liquid. We calculated transmission ratios and deduced shift linewidth construct by extracting edge signal through filtered data. built detection system test performance this measured for distilled water at different temperatures compared it with theoretical prediction. observed difference between experimental values is...
Brillouin spectroscopy is a powerful tool to measure the water temperature and salinity profiles of seawater. Considering insufficiency current spectral measurement methods in real-time, integrity, continuity, stability, we developed new lidar system for spectrum on an airborne platform that based Fizeau interferometer multichannel photomultiplier tube. In this approach, uses time-of-flight information depth relies as indicator. study, parameters were first optimized analyzed. Based analysis...
This article presents a LiDAR system that utilizes Fizeau interferometer and photomultiplier tube array to detect the water Rayleigh–Brillouin spectrum, utilized obtain underwater temperature salinity synchronizing measurements based on Brillouin spectral linewidth shift. Temperature were conducted in laboratory verify efficiency of system. The results demonstrate can accurately backscattering profiles water. Following linear fitting reconstruction, retrieved accuracy is ±0.13 °C ±0.16‰. By...
Laser Doppler vibrometer (LDV) is a non-contact optical interferometric system to measure vibrations of structures and machines with high precision. Normal LDV can only offer single-point measurement. Scanning usually impractical do measurement on transient events. In this paper, fiber-based self-synchronized multi-point proposed. The multiple laser beams different frequency shifts are generated from one source. projected onto vibrating object, reflected interfered common reference beam....
Spaceborne photon-counting LiDAR holds significant potential for shallow-water bathymetry. However, the received photon data often contain substantial noise, complicating extraction of elevation information. Currently, a denoising algorithm named ordering points to identify clustering structure (OPTICS) draws people’s attention because its strong performance under high background noise. this algorithm’s fixed input variables can lead inaccurate distribution parameters in areas near water...
Laser Doppler vibrometry (LDV) is a well-known interferometric technique to measure the motions, vibrations and mode shapes of machine components structures. The drawback commercial LDV that it can only offer pointwise measurement. In order build up vibrometric image, scanning device normally adopted scan laser point in two spatial axes. These vibrometers (SLDV) assume measurement conditions remain invariant while multiple identical, sequential measurements are performed. This assumption...
Optical detection methods such as Rayleigh–Brillouin scattering spectrum can be used for physical parameter measurement in solids, liquids, and gas. In this paper, a new method based on spectral characteristics is proposed to realize temperature pressure retrieval simultaneously The of are firstly utilized establish the model by fitting Tenti-S6 line shape with 3Voigt at different temperatures pressures, then deriving equations via regression procedure. Through theoretical measured error...
Laser Doppler vibrometry(LDV) is a precise and non-contact optical interferometry used to measure vibrations of structures machine components. LDV can only provide point-wise measurement, or scanning measurement via moving the laser beam rapidly onto vibrating object which assumed be invariant in course. Consequently, usually impractical do on transient events. In this paper, new self-synchronized multipoint proposed. The multiple beams are separated from one source, different frequency...
Optical coherent detection is a precise and non-contact method for measurement of tiny deformation or movement an object. In the last century, it can only be used on static quasi-static between two statuses. Recently has been applied dynamic with help high-speed camera. The advantage this technique that offer full-field measurement. However, due to limited capturing rate camera, its capability in temporal domain cannot meet requirements many applications. study, several issues...