A5101806203- Laser Design and Applications
- Spectroscopy and Laser Applications
- Solid State Laser Technologies
- Laser-induced spectroscopy and plasma
- Laser-Matter Interactions and Applications
- Photonic Crystal and Fiber Optics
- Quantum optics and atomic interactions
- Random lasers and scattering media
- Atomic and Subatomic Physics Research
- Advanced Fiber Laser Technologies
- Ocular and Laser Science Research
- Cold Atom Physics and Bose-Einstein Condensates
- Atomic and Molecular Physics
- Particle accelerators and beam dynamics
- Orbital Angular Momentum in Optics
- Advanced Optical Imaging Technologies
- Radiation Detection and Scintillator Technologies
- Spectroscopy Techniques in Biomedical and Chemical Research
- Terahertz technology and applications
- Plasma Diagnostics and Applications
- Radiation Therapy and Dosimetry
- Advanced Semiconductor Detectors and Materials
- Photorefractive and Nonlinear Optics
- Optical Coherence Tomography Applications
- Solid-state spectroscopy and crystallography
Xiamen University
2025
Changchun Normal University
2025
Changchun University of Science and Technology
2015-2024
Dalian Institute of Chemical Physics
2015-2024
Chinese Academy of Sciences
2015-2024
University of Chinese Academy of Sciences
2024
Lanzhou University
1992-2024
Hunan Normal University
2023
Hunan Provincial People's Hospital
2023
Northeast Agricultural University
2022
Recognizing medical named entities is a crucial aspect of applying deep learning in the domain. Automated methods for identifying specific from literature or other texts can enhance efficiency and accuracy information processing, elevate service quality, aid clinical decision-making. Nonetheless, current exhibit limitations contextual awareness insufficient consideration relevance interactions between entities. In this study, we initially encode text inputs using Chinese pre-trained...
With the widespread use of lithium-ion batteries in various application fields, accurate prediction battery state health (SOH) has become an important research topic to ensure performance and safety. To improve accuracy SOH prediction, this paper proposes a novel approach that combines multidimensional feature extraction transformer–LSTM fusion model. This method extracts time domain, frequency dimension features from voltage, energy, temperature curves. It evaluates importance, removes...
Ticks transmit diverse human and animal pathogens, leading to an increasing number of public health concerns. In the forest area northeast China, spread tick-borne diseases (TBDs) is severe; however, little known about tick virome composition evolution. Herein, we investigate geographical distribution species related viruses in Heilongjiang Jilin Provinces Northeast China. To reveal diversity parts Jilin, ticks were collected at 9 collection points these provinces 2018. Morphology molecular...
Stimulated Raman scattering (SRS) lasers equipped with bulky gas cells have been widely criticized. The special "donut″-shaped intensity distribution of vortex light (VL) is expected to reduce the pump laser intensity, suppress laser-induced breakdown, and fulfill miniaturization. In this work, spiral phase plates different topological charges (l = 1,2,4) employed convert l 0 flattened Gaussian beam (FGB) into VLs, which served as sources. Lenses focal lengths F 1000, 400, 200 mm were chosen...
The transmission of high-current electrons through a tapered SiO2 capillary was investigated. angular distribution and incident energy dependence transmitted were observed. We found that the fraction decreases with energy. had significant loss but could not be focused by capillary.
Stimulated raman scattering (SRS) is an effective method for expanding the spectral range of high power lasers, especially in regime near IR and middle IR. We report SRS pressure H2 with a multiple-pass cell configuration. The configuration found to be very efficient reduction threshold first Stokes (S1). Due coherent (CSRS) process, more second (S2) increasing conversion efficiency S2. This contributes relatively low S1 Multiple-pass also improving beam quality stability S1.
Besides the scattering structures, energy transfer (ET) process in gain medium plays a significant role competition between coherent (comprising strongly components) and incoherent (consisting of weakly or “hidden” modes random lasers. In this study, bichromatic emission lasers were successfully created using polydimethylsiloxane (PDMS) replicas with grooved structures that imitate inner surface abalone shells as substrates. The influence mechanism ET from monomer to dimer Rhodamine 640 dye...
Stimulated Raman scattering (SRS) is an efficient nonlinear frequency conversion method, enabling simultaneous generation of red, green, and blue (RGB) lasers. In order to synthesize a white light source for laser display by SRS, 532 nm was used as pump source, high purity gaseous carbon dioxide (CO2) the active medium. First, optimizing experimental parameters, with f = 1.5 m focal lens, in 0.8 atm CO2 pumped at 304 mJ, first-order anti-Stokes (AS1) 495 achieved, energy 31.9 peak power 10.9...
In this work, a 1.67 µm laser was generated in the pressurized deuterium pumped by pulsed 1064 nm via stimulated vibration + rotation Raman scattering (SV-RRS). By optimization of pressure, focal length, and polarization pump laser, 66.2 mJ achieved with configuration 1.7 MPa 2245 mm 220 circularly polarized laser. Correspondingly, photon conversion efficiency 47.8%, energy 30.5%, pulse width 5.4 ns, maximum peak power 12.3 MW. addition, SV-RRS found to improve beam quality significantly: from M
A ∼2.1-µm laser is within an atmospheric transmission window and can be used in remote sensing. In this work, a 1064-nm was as the pump source, pressurized hydrogen Raman active medium, dual-wavelength generated. The 2147-nm generated by combination processes of stimulated vibrational scattering rotational scattering, while 2132-nm S-branch scattering. Optimizing experimental conditions yielded maximum pulse energy 76.1 mJ, peak power ∼9.2MW, photon conversion efficiency 29.8%.
In this work, the anisotropy of nonlinear absorption in a crystal Q-switch was considered when we established coupled rate equations passively Q-switched laser. A [100]-cut Cr4+:YAG crystal, with initial transmission T0=40%, used as to evaluate theoretical model, and results simulation were good accordance experiment. order control timing jitter laser, an actively Nd:YAG laser applied directly bleach crystal. The more than 1 μs without bleaching light. While there light, time lag between...
Gaseous Raman lasers cover a range of wavelengths but lack wavelength tunability. Here, <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"> <mml:mn>1</mml:mn> <mml:mspace width="thickmathspace"/> <mml:mrow class="MJX-TeXAtom-ORD"> <mml:mi mathvariant="normal">c</mml:mi> </mml:mrow> <mml:msup> mathvariant="normal">m</mml:mi> <mml:mo>−</mml:mo> </mml:msup> </mml:math> linewidth 532 nm laser was used as pump laser, and with narrow-linewidth seed injection, first Stokes...
This paper reports laboratory measurements of the spectrum highly ionized sulfur. The S ix–S xiii has been observed in wavelength range 170–500 Å. A total 54 lines have measured. Forty-two them classified as 2s22pk–2s2pk+1 and 2s2pk–2pk+1 transitions. Twelve other ascribed to 2s–2p, 4p–5s, 5p–6s, 5d–6p, 6p–8d These spectral identified, among which 22 are new accurately analysis spectra was based on a comparison with experimental results calculated values.