A5029234810- Thermography and Photoacoustic Techniques
- Silicon and Solar Cell Technologies
- Laser Material Processing Techniques
- Spectroscopy and Laser Applications
- Optical Coatings and Gratings
- Optical Systems and Laser Technology
- Photoacoustic and Ultrasonic Imaging
- Surface Roughness and Optical Measurements
- Advanced Fiber Optic Sensors
- Laser Design and Applications
- Semiconductor materials and interfaces
- Spectroscopy Techniques in Biomedical and Chemical Research
- Calibration and Measurement Techniques
- Photonic and Optical Devices
- Advanced Measurement and Metrology Techniques
- Semiconductor Lasers and Optical Devices
- Integrated Circuits and Semiconductor Failure Analysis
- Advanced optical system design
- Advanced Surface Polishing Techniques
- Thermal properties of materials
- Advanced Fiber Laser Technologies
- Thin-Film Transistor Technologies
- Adaptive optics and wavefront sensing
- Solid State Laser Technologies
- Advanced Sensor Technologies Research
University of Electronic Science and Technology of China
2015-2024
Institute of Optics and Electronics, Chinese Academy of Sciences
2012-2024
Ocean University of China
2024
Dalian Maritime University
2023
Hunan Agricultural University
2022
Chinese Academy of Sciences
2011-2021
Beijing Aerospace Flight Control Center
2019
Yangtze University
2018
Shanxi University of Traditional Chinese Medicine
2018
Academy of Opto-Electronics
2015
To clarify preservation mechanism and flavor variation of postharvest button mushroom (Agaricus Bisporus) coated compounds protocatechuic acid-CaCl2-NaCl-pullulan, the acid (118 mg/L)-CaCl2 (0.83%)-NaCl (0.55%)-pullulan (0.30%) composite preservative (CP) at spray rate 13:1 was used to coating on storage 4 ± 1 °C. Compared negative control (NC) group, respiration rate, browning degree, malondialdehyde (MDA) content, polyphenol oxidase (PPO), total phenolic content CP treatment decreased 26%,...
Modulated thermoreflectance microscopy is applied to a complete thermal characterization of thin film gold (78 nm) or YBaCuO (300 on LaAlO3 substrate. The phase profile, measured at several modulation frequencies covering an appropriate range, fitted with rigorous diffusion model. This leads simultaneous estimation the diffusivities and substrate, as well film/substrate boundary resistance. estimated values for sample are, respectively, 4.3×10−6 m2 s−1 (substrate diffusivity), 1.0×10−4 (film...
Path deviations caused by geometrical errors in machining equipment significantly affect the quality of optical components. To enhance and efficiency component processing, this paper presents a Chebyshev interpolated Levenberg-Marquardt algorithm (CILM) aimed at compensating for path robotic smoothing system utilized processing. First, positioning accuracy is measured using laser tracker. Subsequently, an objective function constructed based on robot kinematics error models to optimize...
Simulations are performed to investigate the accuracy of simultaneous determination electronic transport properties (the carrier lifetime, diffusion coefficient, and front rear surface recombination velocities) silicon wafers by means photocarrier radiometry (PCR) technique through fitting frequency-scan data a rigorous model via multi-parameter process. The uncertainties fitted parameter values analyzed calculating dependence square variance including both amplitude phase variances on...
A straightforward theoretical routine is proposed to design shadowing masks which are used for preparing uniform coatings on flat as well strongly curved spherical substrates with large diameters in planetary rotation system. By approximating a substrate corresponding simple around the revolution axis, initial shape of mask determined. The desired uniformity further realized through expanding appropriately arc length mask. Utilizing designed routine, film uniformities better than 97%...
A three-dimensional three-layer model is presented for the quantitative understanding of infrared photocarrier radiometry (PCR) response ion-implanted semiconductors, specifically Si. In addition to implanted layer and intact substrate normally assumed in all existing two-layer theoretical models describe photothermal a surface considered this represent thin, less severally damaged region close surface. The effects on PCR signal several structural, transport, optical properties silicon...
The determination of the electronic transport properties ion-implanted silicon wafers with photocarrier radiometry (PCR) technique by fitting frequency scan data to a single layer model via multiparameter procedure is presented. A three-layer used simulate inhomogeneous structure wafers. effects structural, electronic, and optical implanted layer, which are affected significantly ion implantation, on behavior PCR signal discussed. Data simulated fitted single-layer extract carrier lifetime...
A dual-polarized multiple-input-multiple-output (MIMO) antenna integrated with electromagnetic band-gap (EBG) is proposed. The MIMO consists of two (0 ◦ and 90 polarizations) elements. Each element includes four symmetrical arc-shaped slots. mushroom-shaped EBG structure slots at its fringe designed to enhance the gain antenna. bandwidth (return loss > 10 dB) proposed from 5.70 5.93 GHz, peak 5.45 dBi. isolation between ports adjacent elements can be as small less than �20 dB. has a compact...
We demonstrate the use of a two-channel cavity ring-down (CRD) technique for simultaneously measuring/mapping reflectance R, transmittance T and optical loss L (absorption plus scattering losses) highly reflective (HR) anti-reflective (AR) laser components. High reflectance/transmittance HR/AR components is measured with time CRD signals, while low residual transmittance/ determined by amplitude ratio two then via = 1-R-T. Experiments are performed to measure map T, HR mirrors different...
Coherent beam combination of fiber laser phased array is a promising technique to achieve high-brightness output. In this paper, we focus on central-lobe energy enhancement the combined in far-field by theoretically and experimentally investigating relationship between power-in-the-bucket (PIB) beamlets amplitude modulation near-field. We employ 19-elements integrating adaptive fiber-optic collimators with beamlet filling factor 0.903 phase-locking pointing correction among lasers using SPGD...
Laterally resolved modulated free-carrier absorption (MFCA) is applied to the simultaneous determination of electronic transport properties semiconductor wafers. A rigorous three-dimensional carrier diffusion model used fit observed dependences MFCA signal amplitude and phase on separation between pump probe laser spots, measured at several modulation frequencies covering an appropriate range. This leads a unambiguous values three parameters, namely, minority-carrier lifetime τ, diffusivity...
To the best of our knowledge, a combined sensitive technique employing both laser calorimetry and surface thermal lens scheme for measuring absorption values optical coatings is presented first time. Laser calorimetric pulsed signals are simultaneously obtained with highly reflecting UV coating sample irradiated at 193 nm. The advantages potential applications experimental factors limiting measurement sensitivity discussed.