A5101838241- Solid State Laser Technologies
- Photorefractive and Nonlinear Optics
- Advanced Fiber Laser Technologies
- Orbital Angular Momentum in Optics
- Laser Design and Applications
- Photonic Crystal and Fiber Optics
- Laser-Matter Interactions and Applications
- Luminescence Properties of Advanced Materials
- Semiconductor Lasers and Optical Devices
- Glass properties and applications
- Photonic and Optical Devices
- Advanced Fiber Optic Sensors
- Carbon and Quantum Dots Applications
- Metamaterials and Metasurfaces Applications
- Optical Wireless Communication Technologies
- Nonlinear Photonic Systems
- Optical Polarization and Ellipsometry
- Spectroscopy and Laser Applications
- Ga2O3 and related materials
- Gas Sensing Nanomaterials and Sensors
- ZnO doping and properties
- Plasmonic and Surface Plasmon Research
- Nanocluster Synthesis and Applications
- Sperm and Testicular Function
- Cold Atom Physics and Bose-Einstein Condensates
Yunnan University
2015-2024
Changchun University of Science and Technology
2007-2014
University of the Sciences
2009-2010
The quasi-three-level 912 nm continuous-wave laser emission under direct diode pumping at 880 into emitting level 4F3/2 of Nd:GdVO4 have been demonstrated. An end-pumped crystal yielded 8.1 W output power for 13.9 absorbed pump power. slope efficiency with respect to the was 0.679. To best our knowledge this is first demonstration such a system. Comparative results obtained 808 nm, highly-absorbing 4F5/2 level, are given in order prove advantages wavelength pumping.
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 for the first time (to our knowledge) a diode-pumped Nd:YAG laser emitting at 869 nm based on (4)F(3/2)-(4)I(9/2) transition, generally used 946 emission. Power of 453 mW has been achieved in cw operation with fiber-coupled diode 35.4 W 809 nm. Intracavity second-harmonic generation mode also demonstrated power 118 435 by using BiB(3)O(6) nonlinear crystal. In experiment, we LiNbO(3) crystal lens to complement thermal rod, and obtained good beam quality high output stability.
We report an efficient continuous wave (CW) laser emission at 559 nm by sum-frequency mixing of the fundamental and first-Stokes fields generated within Nd:YVO4 self-Raman laser. Intracavity with LiB3O5 (LBO) nonlinear crystal yielded 890 mW visible yellow-green emission, corresponding to optical conversion efficiency 4.9% respect incident pump power; output power stability over 4 h is better than 5.7%. The beam quality M2 factors are 3.65 4.13 in both horizontal vertical dimensions respectively.
We present for the first time laser architecture to obtain continuous-wave yellow radiation at 594 nm. The choice of crystals (Nd:LuVO4 emission 1343 nm and Nd:YAG 1064 nm) was guided by performance. A part pump power then absorbed Nd:LuVO4 crystal, remaining used crystal. Intracavity sum-frequency mixing realized in a KTiOPO4 (KTP) crystal reach radiation. obtained output 312 mW with diode emitting 18.4 W 808
We report a laser architecture to obtain continuous-wave blue radiation at 488 nm. A 808 nm diodepumped the Nd:YVO4 crystal emitting 914 part of pump power was then absorbed by crystal. The remaining used Nd:YLF 1047 Intracavity sum-frequency mixing and realized in LBO reach radiation. obtained output 514 mW with diode 19.6 W
We present for the first time a Nd:YAG laser emitting at 1064 nm intracavity pumped by 946 diode-pumped laser. A 809 diode is used to pump crystal nm, and second nm. Intracavity sum-frequency mixing was then realized in LBO reach cyan range. obtained continuous-wave output power of 485 mW 501 with 25.4 W
We present for the first time a dual-wavelength laser operation at 1064 and 914 nm in two NdYVO4 crystals. A 879 diode is used to pump Nd:YVO4 crystal emitting nm, second intracavity pumped nm. total output power of 4.28 W fundamental wavelengths was achieved absorbed 13.8 W. The M2 values lights maximum were found be around 1.3 1.1, respectively.
We present a laser architecture to obtain continuous-wave (CW) light sources at the 589 nm sodium D2 line. A 808 diode-pumped Nd:YLiF4 (Nd:YLF) crystal emitting 1053 nm. part of pump power was then absorbed by Nd:YLF crystal. The remaining used Nd:YAG 1338 Intracavity sum-frequency mixing and realized in LiB3O5 (LBO) reach yellow-orange radiation. obtained CW output 235 mW with diode 17.8 W
The propagation model of orbital angular momentum (OAM) modes carried by the perfect vortex (pv) beam through anisotropic oceanic turbulence links is established and factors influencing OAM are discussed. findings show that self-focusing property pv beams beneficial to modes: a smaller topological charge, initial radius, an optimized half-ring width can alleviate degrading effects on beam. Additionally, with longer wavelength more resistant turbulent interference. conditions higher...
In this paper, a flat-topped vortex hollow beam, which is new mathematical model for dark beams, has been introduced. The propagation properties of beam circular and elliptical symmetry are investigated. According to the Collins formula under paraxial conditions, analytical formulas average intensity effective radius derived. Compared with general by using numerical simulation, characteristics studied in detail. relationships between distance z also provided graphically. From graphical...
The analytical expressions for the cross-spectral density, average intensity and complex degree of spatial coherence a radial phased-locked partially coherent flat-topped vortex beam array propagating through non-Kolmogorov medium are obtained by using extended Huygens-Fresnel principle. evolution behaviors studied in detail. It is shown that depend on parameters including correlation length, radius array, as well propagation distance. A with high evolves more rapidly than low coherence.
We report a high-efficiency Nd:LuVO4 laser operating at 1066 and 1343 nm, respectively, direct pumped by diode 880 nm. The maximum outputs of 10.5 7.0 W, are obtained in 8-mm-thick 0.4 at.% crystal with 16.9 W absorbed pump power leading to high slope efficiency respect the 64.4 44.5%. Under traditional pumping 809 9.8 6.2 nm 19.3 power, corresponding 54.9 34.9%.
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...
We report for the first time a coherent ultraviolet radiation at 336 nm by intracavity sum-frequency generation of 912 Nd:GdVO4 laser and 532 frequency doubling Nd:YVO4 laser. The is obtained using doubly resonator, type-I critical phase matching CsLiB6O10 (CLBO) crystal mixing. With total diode pump power 31.8 W (13.1 18.7 laser), TEM00 mode 93 mW obtained. stability better than 3.4% beam quality M2 factors are 1.52 1.27 in both horizontal vertical dimensions respectively.