A5100639318- Solid State Laser Technologies
- Advanced Fiber Laser Technologies
- Photorefractive and Nonlinear Optics
- 2D Materials and Applications
- Perovskite Materials and Applications
- Luminescence Properties of Advanced Materials
- Spectroscopy and Laser Applications
- Ferroelectric and Negative Capacitance Devices
- Mechanical stress and fatigue analysis
- Gear and Bearing Dynamics Analysis
- Energy Harvesting in Wireless Networks
- Chalcogenide Semiconductor Thin Films
- MXene and MAX Phase Materials
- Laser Design and Applications
- Tribology and Lubrication Engineering
- Optical properties and cooling technologies in crystalline materials
- Nanowire Synthesis and Applications
Northwest University
2023-2024
Shandong University
2013-2023
Chongqing University of Posts and Telecommunications
2023
Nanjing University
2017
State Key Laboratory of Crystal Materials
2013-2015
Transition metal thiophosphates (MTPs) are a group of emerging van der Waals materials with widely tunable band gaps. In the MTP family, CdPSe
To realize steep-slope MoS2 n-type FET, we fabricate negative capacitance FET (NCFET) structure using ferroelectric HfZrOx (HZO)/AlOx as dielectric layer. The NCFET devices exhibit ultra-low subthreshold swing (SS) of 23 mV/dec, sub-60mV/dec over 6 orders Id, nearly hysteresis-free up to V <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">ds</inf> = 1V, small |V xmlns:xlink="http://www.w3.org/1999/xlink">th</inf> | <0.4V, I...
We report on a systematic study of the absorption and emission spectral properties (Yb(0.1)Y(0.9))(3)(Sc(1.5)Ga(0.5))Ga(3)O(12) (Yb:YSGG) crystals. The broad fluorescence lines indicate great potential Yb:YSGG for tunable ultrafast laser applications. Efficient continuous-wave (cw) oscillation was also demonstrated at room temperature (RT), generating an output power 6.11 W with optical-to-optical efficiency 64.2%, slope 80.1% respect to absorbed pump power. spectrum shifts shorter...
The NiPS 3 -based self-powered photodetector with asymmetric electrode contact design demonstrated prominent photoelectric detection ability, which provides a potential route for applications in wearable photoelectronic devices and green energy economy.
We demonstrate the temperature-dependent fluorescence properties of Pr:LiGdF4 crystal for first time, to best our knowledge, and its blue diode pumped cw red laser at 720 nm room temperature. The lifetime polarized emission cross sections in visible range are measured calculated a temperature from 77 K 300 K, variations spectra discovered. reasons these changes explained accordingly. output wavelength is reported on performance by using fiber-coupled 442 as pump source, maximum power about 303 mW.
We report a laser-diode pumped continuous-wave (cw) and passively Q-switched eye-safe laser at about 1.42 μm with the neodymium-doped yttrium gallium garnet (Nd:YGG) crystal for first time to our knowledge. The composite Nd:YGG was developed originally. A systematic comparison of performance between homogeneously doped made, which showed that manifested less thermally induced effects. Cw output power 2.06 W obtained slope efficiency 20.7%. With V:YAG as saturable absorber, passive...
An efficient compact Yb:Y3Sc1.5Ga3.5O12 garnet crystal laser actively Q-switched with an acousto-optic modulator is demonstrated, producing stable pulses at repetition rates ranging from 1 to 30 kHz. With 10.8 W of pump power absorbed, average output 3.1 1025.7 nm generated pulse rate kHz, a slope efficiency 46%. The resulting energy, duration, and peak are mJ, 23.9 ns, 130 kW, respectively.
High-quality (YbxY1-x)3(Sc1.5Ga0.5)Ga3O12 (Yb:YSGG) (x = 0, 0.05, 0.1, 0.15, 0.2, 0.25, 0.5, and 1) single crystals have been successfully grown by the optical floating zone (OFZ) method. The phase purity atomic structure were analyzed in detail employing X-ray powder diffraction (XRPD) with Rietveld refinement. Chemical composition was measured investigated fluorescence (XRF). results of thermal survey show that conductivity declines from 6.543 W·m−1·K−1 for YSGG to 3.708 50 at.% Yb3+-doped...
We report, for the first time, on passive Q-switching laser performance of Yb:YSGG disordered garnet crystal. An average output power 2.6 W at 1025.8 nm was produced a pulse repetition rate 11 kHz with slope efficiency 47%; resulting energy, duration, and peak were respectively 236 μJ, 3.6 ns 65.6 kW. The in continuous-wave mode under 935-nm diode pumping also investigated, coupling changed over wide range from 0.5% to 60%.
The SnP 2 S 6 -based MSM photodetector with asymmetric electrode contacts demonstrated prominent self-powered photoelectric response in visible light region, which provides a possible way for its application portable energy saving devices.
A series of high quality Yb3+-doped gadolinium scandium gallium garnet (Yb:GSGG) single crystals with different Yb3+ ion concentration (7.5, 10, 15 and 30 at.%) has been grown by means optical floating zone (OFZ). Crystal structure was analyzed X-ray powder diffraction (XRPD), showing that the Yb:GSGG crystal possesses a cubic space group Ia3d, lattice constants decrease linearly as increases. Effective elemental segregation coefficients chemical composition were investigated fluorescence...
External load acting on the rolling element bearing (REB) is transmitted by (RE) between inner raceway and outer raceway, radial components carried RE are unequal due to different angular position of located REB when they driven cage. The distribution regularity influenced size internal diametrical clearance, magnitude azimuth external load, total number elements, as well geometry REB. Understanding radially loaded acts a significant support for computing contact mechanics raceways has an...
High-power continuous-wave (CW) deep ultraviolet lasers attract growing research interest in the field of optoelectronics. Herein, we perform a CW laser at 261 nm by intracavity frequency doubling single-blue-laser-diode-pumped Pr3+:LiYF4 (Pr:YLF) laser. The excellent mode matching between pump and fundamental-frequency beams is realized optimizing focusing resonator systems. On that basis, maximum obtained 1.41 W 522 nm, corresponding to slope efficiency 59.12%. Moreover, further...