A5101857560- Solid State Laser Technologies
- Advanced Fiber Laser Technologies
- Photorefractive and Nonlinear Optics
- Laser Design and Applications
- Photonic Crystal and Fiber Optics
- Mass Spectrometry Techniques and Applications
- Laser-Matter Interactions and Applications
- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- High-Velocity Impact and Material Behavior
- Structural Response to Dynamic Loads
- Luminescence Properties of Advanced Materials
- Spectroscopy and Laser Applications
- Advanced Chemical Physics Studies
- Orbital Angular Momentum in Optics
- Analytical chemistry methods development
- Power Systems and Technologies
- Semiconductor Lasers and Optical Devices
- Photochemistry and Electron Transfer Studies
- Crystallography and molecular interactions
- Mechanical Behavior of Composites
- Geotechnical Engineering and Underground Structures
- Optical and Acousto-Optic Technologies
- Corneal surgery and disorders
- Innovations in Concrete and Construction Materials
Changchun University of Science and Technology
2010-2023
Academy of Military Medical Sciences
2023
China Power Engineering Consulting Group (China)
2022
Shandong University
2004-2013
South China University of Technology
2008
Anhui Institute of Optics and Fine Mechanics
1986-1993
We report for the first time (to our knowledge) cw orange-yellow emission at 589 nm from a compact double-end diffusion-bonded Nd(3+):LuVO(4) self-Raman laser with intracavity frequency doubling in LiB(3)O(5), pumped by an 880 diode laser. A 3.5 W overall diode-to-visible conversion efficiency of 13.3% is achieved through use 18-mm-long double-ended crystal. The M(2) factors are 1.35 and 1.74 both horizontal vertical dimensions, respectively.
We report a linear-cavity high-power all-solid-state Q-switched yellow laser. The laser source comprises diode-side-pumped Nd:YAG module that produces 1064 nm fundamental radiation, an intracavity BaWO(4) Raman crystal generates first-Stokes at 1180 nm, and KTP frequency doubles the to 590 nm. A convex-plane cavity is employed in this configuration counteract some of thermal effect caused by high pump power. An average output power 3.14 W obtained pulse repetition 10 kHz.
A diode-side-pumped actively Q-switched intracavity frequency-doubled Nd:YAG/BaWO(4)/KTP Raman laser is studied experimentally and theoretically. Rate equations are used to analyze the yellow by considering transversal distributions of photon density inversion population density. An 8.3 W 590 nm obtained with a 125.8 808 pump power 15 kHz pulse repetition frequency. The corresponding optical conversion efficiency from diode 6.57%, much higher than that former reported side-pumped laser....
A highly efficient diode-pumped actively Q-switched intracavity Raman laser with SrWO(4) as the Raman-active medium is presented. As high 23.8% diode-to-Stokes optical conversion efficiency obtained an incident pump power of 7.17 W and a pulse repetition rate 15 kHz.
An efficient intracavity frequency-doubled Raman laser was obtained by using an SrWO(4) medium, Nd:YAG ceramic gain and a KTP frequency-doubling medium. Three cavities, including two-mirror cavity, three-mirror coupled folded were investigated. With the 2.93 W, 590 nm at incident pump power of 16.2 W pulse repetition frequency 20 kHz; corresponding conversion efficiency 18.1%. The highest 19.2% 14.1 15 kHz. maximum output much higher than results previously with solid-state lasers.
Over the past century, safety of dams has gradually attracted attention from all parties. Research on dynamic response and damage evolution under extreme loads is basis dam issues. In recent decades, scholars have studied responses earthquake loads, but there still much room for improvement in experimental theoretical research small probability such as explosions. this paper, a 50-m-high concrete gravity used prototype dam, water explosion model test 2.5-m-high designed. The pressure...
A dual-wavelength continuous-wave (cw) diode-end-pumped Nd:YAlO3 (Nd:YAP) laser that generates simultaneous at the wavelengths 1079.5 nm and 1064.5 is demonstrated. The optimum oscillation condition for orthogonal polarized operation has been derived. polarization beam splitter was placed in cavity to split beams polarizing two directions. We obtained a total power output over 6.5 W directions with 4.64 c-axis 1.86 a-axis polarization. Intracavity sum-frequency mixing then realized KTiOPO4...
With the extensive application of composite laminates in protective structures, new materials and structures have been developed rapidly. As an excellent impact-resistant material, aramid fiber is widely used field structures. Aramid show performance anti-penetration, but there no research on its anti-explosive characteristics. In this paper, a kind aramid–steel target (ASCT) plate structure proposed innovatively. The failure mode damage mechanism three kinds ASCT plates with equal area...
An efficient multi-frequency extracavity Raman laser for nanosecond pulses was realized by taking advantage of the anisotropic optical property KGd(WO4)2 crystal. The conversion efficiencies converter were investigated versus pump pulse energy, polarization, and output coupling rate experimentally theoretically. Based on coupled radiation transfer equations, a theoretical model deduced to predict performance solid-state lasers. This solved numerically analyze operation with crystal,...
The passively Q-switched laser characteristics of a quasi-three level Yb3+:Gd3Ga5O12 (Yb3+:GGG) crystal with Cr4+:YAG saturable absorbers are studied experimentally and theoretically. pulse parameters under different experimental conditions measured. Some from those four-level system found. In the theoretical aspect, taking into account spatial distributions pump light intracavity mode, rate equations describing single quasi-three-level obtained. obtained results in fair agreement results....
By using Nd:YVO4 as the gain medium and Raman simultaneously, actively Q-switched operation of self-Raman laser at 1176 nm was realized. The output characteristics including average power, pulse energy width versus incident pump power repetition rate were investigated. At a 20 kHz an up to 0.57 W obtained with 10.2 W, corresponding conversion efficiency 5.6% respect diode input power. Meanwhile, analysis carried out by equations. theoretical results in agreement experimental on whole.
We present a diode-pumped quasi-three-level neodymium-doped yttrium aluminum garnet (Nd:YAG) laser at 885 nm, based on the 4F3/2-4I9/2 transition, generally used for 946 nm emission. Combined with polarization components (Nd:YAG), electro-optical crystal KH2PO4 (KDP) formed Lyot filter in cavity and compressed available gain bandwidth. With an incident pump power of 9.2 W, 714 mW continuous-wave (CW) output was achieved, optical-to-optical efficiency 7.8%. adjustable voltage applied to KDP...
In this paper, a multiple optical parametric oscillator based on MgO:APLN is reported. The polarization structure of and output coupler transmittance are optimized, with high repetition rate 200 kHz 1064 nm laser pumping. 1.57 μm 3.84 cross period parameters light can be achieved by single poled crystal for the first time. maximum average powers 2.4 W at 1.31 obtained, corresponding to optical-optical conversion efficiency 11.54% 6.25%, respectively. For phenomenon energy back appearing in...
A continuous-wave 1.57 and 3.84 μm intracavity multiple optical parametric oscillator based on a single MgO:APLN crystal is reported for the first time. The synchronized dual-wavelength laser obtained by using folded-type double cavity, which consists of 1064-nm resonator oscillator. With T = 10% at 1.47 3.3 output couplers, maximum powers 3.13 W 0.85 are obtained, corresponding to slope efficiencies 6.8% 1.9%, respectively. power stabilities better than 1.8% 3% in half an hour.
By using an a-cut GdVO4 crystal as the Raman-active medium, a KTP frequency-doubling and Nd : YAG gain small scale (10 cm) efficient diode-pumped intracavity frequency-doubled Raman laser is obtained. When pulse repetition frequency 15 kHz incident pump power 10.1 W, obtained average at 58 nm 763 mW. The width 3.8 ns corresponding peak 13.4 kW.