A5100647344- Semiconductor Lasers and Optical Devices
- Photonic and Optical Devices
- Solar Thermal and Photovoltaic Systems
- Photovoltaic System Optimization Techniques
- Solid State Laser Technologies
- Solar Radiation and Photovoltaics
- Optical Systems and Laser Technology
- Laser Design and Applications
- Photonic Crystal and Fiber Optics
- Spectroscopy and Laser Applications
- Semiconductor materials and devices
- Optical Wireless Communication Technologies
- Advanced machining processes and optimization
- Adaptive optics and wavefront sensing
- Advanced Fiber Laser Technologies
- Optical Network Technologies
- Smart Grid and Power Systems
- Phase Change Materials Research
- Advanced Sensor and Control Systems
- Optical Polarization and Ellipsometry
- Laser-induced spectroscopy and plasma
- Advanced Surface Polishing Techniques
- Semiconductor Quantum Structures and Devices
- Solar-Powered Water Purification Methods
- Advanced Fiber Optic Sensors
Shandong Eye Hospital
2025
Shandong Provincial Hospital
2025
Shandong First Medical University
2025
Changchun University of Science and Technology
2005-2024
Chinese Academy of Sciences
2013-2024
Ningxia Normal University
2024
Institute of Geographic Sciences and Natural Resources Research
2023-2024
Shenzhen University
2024
University of Chinese Academy of Sciences
2011-2022
Qingdao University
2022
Sensor-less adaptive optics based on stochastic parallel gradient descent (SPGD) is effective for the compensation of atmospheric disturbances in coherent free-space optical communication systems. However, SPGD converges slowly and easily falls into local extremes. Combining moment estimation SPGD, we propose AdamSPGD algorithm efficient wavefront correction. Theoretical analysis numerical simulations demonstrate that can significantly increase convergence speed, robustness, dynamic ability,...
Abstract. Forest net primary productivity (NPP), representing the carbon gain from atmosphere, varies significantly with forest age. Reliable NPP–age relationships are essential for cycle modeling and prediction. These can be derived inventory or field survey data, but it is unclear which model most effective in simulating NPP variation Here, we aim to establish China's forests based on 3121 samples. Five models, including semi-empirical mathematical (SEM) function, second-degree polynomial...
AIM: To investigate the clinical signs of blepharokeratoconjunctivitis (BKC) and evaluate efficacy penetrating keratoplasty (PKP) for disease. METHODS: Sixteen patients (16 eyes) with BKC complicated by corneal perforation hospitalised at Shandong Eye Hospital were retrospectively analyzed. All received PKP. Participants assessed symptoms, manifestations, activity damage grading BKC. A paired t-test was used to compare uncorrected visual acuity (UCVA) before after surgery perforated eye....
The beam quality mismatch of laser diode stacks in both axes limits many direct applications for fiber or solid pumping and material processing. In this paper, a one-step cutting-rotating shaping system has been designed to homogenize the two polarization-multiplexing stacks. Coupling consisting eight bars into standard with core diameter 600 μm an NA 0.22 is achieved. simulative result shows that will have output power over 1056 W. By using technique, production compact high brightness...
To better understand the thermal hydraulic characteristics of parabolic trough solar field (PTSF), a comprehensive model (CTHM) based on pilot plant is developed in this paper. All main components and transients are considered CTHM, input parameters no longer dependent total flow rate. In paper, we solve CTHM by novel numerical approach graph theory Newton-Raphson method, then examine it two tests conducted plant. Comparing rate, temperature, pressure drop results show good agreement further...
In this study, we investigated the effects of a sequence laser pulses on plasma emission intensity, temperature, and electron density laser-induced soil plasma. The experimental results indicate that radiation was gradually strengthened as laser-pulse progressed. theoretical show spectral line intensity signal-to-background ratio elements Fe, Mn, K, Ti were strongest for from sixth pulse. These data suggest repeatedly ablating same surface position sample with can enhance breakdown...
A thermal energy storage system is a critical component in concentrating solar power plants (CSPP), owing to which (CSP) has superiorities over photovoltaic and wind power. Currently, the sole (TES) commercially applied parabolic trough (PTSP) worldwide two-tank indirect TES. In this study, dynamic models of field (SF), TES system, steam generation (SGS) PTSP plant were developed validated. Control operation strategies on clear day cloudy provided, simulations coupled using actual...
Thermal analysis of a semiconductor laser array is carried out by establishing packaging structure model the based on use copper as base heat sink. A novel composite sink for high-power with copper-implanted graphite microholes proposed. The relationship between location and quantity junction temperature analyzed numerical simulation. found to effectively reduce generated in process operation, highest reduced 4.52 K. Since diode bar composed multiple emitters, intermediate emitters higher...
A wide-field imaging spectrometer based on a grating prism is proposed. The and parameters are discussed to balance spectral distortion over the entire band. design method of grating-prism (GP) dispersive module catadioptric optics in detail. high optical speed (F/2.4) long slit (29.4 mm) visible near-infrared with image quality small presented. results show that performance GP excellent. tolerance analysis indicates can be easily manufactured implemented. prototype has been tested...
The inductive voltage and the current flowing in metallic sheath of power cables play important roles service cables, especially influencing their capacities reliabilities. In this paper, for widely used cross-linked grounding a model calculating cable, including which is calculated by an iterative method capacitive differential method, presented. And process proved out comparison between results based on parameters cable measuring ones. addition, there also analysis relationship some...
Sensor-less adaptive optics (SLAO) based on stochastic parallel gradient descent (SPGD) is effective for the compensation of atmospheric turbulence in coherent free-space optical communication (CFSOC) systems. However, SPGD converges slowly and easily falls into local extremes. Therefore, we propose a novel NadamSPGD algorithm efficient wavefront correction that combines Nesterov-accelerated moment estimation (Nadam) SPGD. Specifically, Nesterov’s accelerated momentum (NAG) gain coefficients...
A major concern of the large-scale deployment location based services (LBSs) is safeguards user's data collected by service providers, since person's information may imply sensitive private information. Most existing techniques have addressed privacy protection mainly for snapshot queries. However, providing anonymity continuous queries important, users' such as habits and customs easy to be inferred observing mining a time-series sequence query. In this paper, we present novel l-diversity...