A5103192822- Laser Design and Applications
- Laser-induced spectroscopy and plasma
- Atomic and Molecular Physics
- Laser-Matter Interactions and Applications
- Laser Material Processing Techniques
- Diamond and Carbon-based Materials Research
- Smart Grid and Power Systems
- Advanced Sensor and Control Systems
- Lightning and Electromagnetic Phenomena
- Ocular and Laser Science Research
- Power Line Communications and Noise
- Optical Coherence Tomography Applications
- Photocathodes and Microchannel Plates
- Laser-Plasma Interactions and Diagnostics
- Semiconductor materials and devices
- Magnetic Properties and Applications
- Technology and Security Systems
- Optical Wireless Communication Technologies
- Photonic and Optical Devices
- Advanced Surface Polishing Techniques
- Advanced Sensor Technologies Research
- Magnetic Field Sensors Techniques
- Geoscience and Mining Technology
- Metallurgy and Material Forming
- Radio Wave Propagation Studies
Peking University
2025
Harbin Institute of Technology
2020-2024
North China Electric Power University
2012-2024
University of Electronic Science and Technology of China
2024
Southwest Petroleum University
2024
State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources
2015
Primary Source
2015
Lanzhou University of Technology
2007
Using a plane–plane resonator composed of silicon carbide mirrors, we achieve for the first time multi-pass amplification 46.9 nm laser pumped by capillary discharge. In terms temporal characteristics, an initial argon pressure 17 Pa, triple-pass is obtained at delay between pre-pulse and main pulse currents 40 µs, quadruple-pass 50 µs. The experimental results show that gain duration plasma column more than 6 ns. spatial spot output has reduced full width half maximum divergence compared...
Reconfigurable intelligent surfaces (RISs) can be densely deployed in the environment to create multi-reflection line-of-sight (LoS) links for signal coverage enhancement. However, conventional reflection-only RISs only achieve half-space reflection, which limits LoS path diversity. In contrast, simultaneously transmitting and reflecting (STAR-RISs) full-space reflection transmission, thereby creating more paths. Hence, this paper, we study a new multi-STAR-RIS-aided communication system,...
Extreme Ultraviolet (EUV) radiation is a short-wavelength light source that has important applications in many fields, such as optical communication, particle manipulation, and ultrahigh resolution imaging. However, the highly absorptive nature of EUV makes it challenging to design suitable focusing optics, focal splitters, properly manipulate energetic light. Here, we propose modified spiral photon sieves transform laser into azimuthally splitting focusing. A genetic algorithm was used...
Wireless sensor unit is a vital part of the Internet Things, which responsible for signal acquisition and transmission. Electromagnetic disturbance issue in substation where wireless sensors are usually located be studied to ensure reliability security Things. This paper focuses on electromagnetic generated by operation power system. Through field measurements, research characteristics steady-state transient substations different voltage levels insulation types carried out. Moreover,...
This paper studies on immunity of wireless sensor unit in the Internet Things substation, which is responsible for signal acquisition and transmission. Field measurement experiment indicate that influenced by electromagnetic disturbance substation. Analysis data shows frequency range includes communication unit. In order to reveal distribution induced voltage under ensure reliability security simulation test are performed.
The electron field emission properties of C-doped capped single-walled BNNT （C@BNNT） are investigated by first-principles study. results show that with the increase applied electric field, electronic structure C@BNNT changes significantly，the density states （DOS） shifts towards low energy position，the local （LDOS） at Fermi level increases dramatically，the gap between lowest unoccupied molecular orbital （LUMO） and highest occupied （HOMO） decreases drastically electrons congregate to side....
Ma, H.; Zhang, W.; Cui, X.; An, B.; Jin, Y., and Cheng, K., 2015. Substation electromagnetic environment of electric power communication equipment characteristic parameters.The steady transient near electrical in substations converter stations is measured different voltage levels positions. After analyzing counting a large number measurement samples, mathematics character parameters disturbance are gained, which provide the theoretical basis for protective measures.
This paper is to study the effect of power line communication (PLC) system for meter reading on electromagnetic environment. The experimental PLC testing radiated disturbance set up. methods match regulation FCC Part 15. simulation model established using method moment, and its effectiveness verified by comparing calculated results with measured data. At application sites reading, voltage at beginning lines intensity typical measurement points in area are under three operating conditions...
Wireless sensor unit is important part of the Internet Things, which responsible for signal acquisition and transmission. In order to ensure reliability security electromagnetic disturbance issue in substation where wireless sensors are usually located studied. This paper focuses on generated by power system immunity unit. Research characteristics steady-state substations different voltage levels insulation types performed, through field measurements. Statistical frequency domain obtained,...
The first-principles calculation was performed to study the electron field emission properties of carbon nanocones （CNC） with different cone angles and geometrical structures. results show that increase applied electric （Eadd）, electronic structure CNC changes significantly, density states （DOS） shifts towards low energy position. Especially, DOS at Ef increases pseudogap decreases respectively, a majority electrons congregate close end. investigation DOS, HOMO/LUMO Mulliken population...
The process of electron-positron pair creation through multi-photon absorption in a space-time dependent electric field is analyzed using computational quantum theory. Our findings reveal two distinct channels: the symmetric and asymmetric transition channels. We propose that channel arises from inherent spatial inhomogeneity intense laser pulses. By mapping field-theoretical model laser-assisted onto quantum-mechanical time-dependent framework, semi-analytical solution captures signatures...
Photomultiplier tubes (PMTs) are essential in xenon detectors like PandaX, LZ, and XENON experiments for dark matter searches neutrino properties measurement. To minimize PMT-induced backgrounds, stringent requirements on PMT radioactivity crucial. A novel 2-inch low-background R12699 has been developed through a collaboration between the PandaX team Hamamatsu Photonics K.K. corporation. Radioactivity measurements conducted with high-purity germanium detector show levels of approximately...
The damage mechanism of a nanosecond extreme ultraviolet (EUV) laser with solid targets is complex and involves thermal nonthermal effects. In this study, the interaction process 46.9 nm copper was investigated. A Faraday cup used to measure electron signals induced by irradiation. photo-ionization effects in are discussed according results.