-
Article
Growth, rietveld refinement, Raman spectrum and dislocation of Ca2+/Mg2+/Zr4+-substituted GGG: a potential substrate and laser host material
The Ca2+/Mg2+/Zr4+-substituted Gd3Ga5O12 (SGGG) crystal is widely used as magneto-optical substrate, such as preparation of YIG series thin films by liquid phase epitaxy. Adaptation of the two is the most common ...
-
Article
Open AccessStudy on instability mechanism of soft rock roadway and pressure-relief bolt-grouting support technology
Aiming at the engineering problem of roadway deformation and instability of swelling soft rock widely existed in Kailuan mining area, the mineral composition and microstructure of such soft rock were obtained ...
-
Article
7.25 W LD side-pumped Er:YGG CW laser operated at 2.8 μm
An Er:Y3Ga5O12 crystal doped with 30 at% Er3+ was grown by the Czochralski method. The crystal structure and component, thermal and spectroscopic properties are studied systematically. The laser performance of a ...
-
Article
Growth, defects, mechanical, and optical properties of transparent KTaO3 single crystal
KTaO3 (KT) is an important material for optoelectronic and tunable microwave applications. However, growing large size and uniform crystals still remain a challenge. In this paper, a promising approach for growin...
-
Article
Investigation on the mechanical, thermal properties, and refractive index of Er,Pr:GYSGG laser crystal
We investigate the mechanical, thermal properties, and refractive index of (Er0.66Gd1.17)(Pr0.003Y1.167)Sc2Ga3O12 (Er,Pr:GYSGG) crystal with excellent radiation-resistant ability grown by the Czochralski method. ...
-
Article
Topic-based label distribution learning to exploit label ambiguity for scene classification
One of the greatest challenges for scene classification is the lack of sufficient training samples. Label distribution learning (LDL) is proven to be effective in handling insufficient samples by exploiting la...
-
Article
Effect of Tm3+ concentration on structure, defect, and spectral properties of Tm: YAP crystals
Tm3+ doped YAlO3 (Tm:YAP) crystals with different concentrations were grown successfully by Czochralski method. The full width at half maximum of 0.007–0.008° shows high crystalline quality. The shape of dislocat...
-
Article
A classification model of railway fasteners based on computer vision
Fasteners are critical railway components that maintain the rails in a fixed position. The state of fasteners needs to be periodically checked in order to ensure safe transportation. Several computer vision me...
-
Article
Growth, structure, and spectroscopic properties of an Yb3+, Ho3+ co-doped LuYAG single crystal for 2.91 μm laser
Yb3+ and Ho3+ co-doped Lu2.55Y0.45Al5O12 (Yb,Ho:LuYAG) crystal with a size of Φ 28 mm × 120 mm was successfully grown by the Czochralski method. The lattice parameters of the as-grown Yb,Ho:LuYAG crystal were obt...
-
Article
Crystal growth, structure, defects, mechanical and spectral properties of Nd0.01:Gd0.89La0.1NbO4 mixed crystal
A novel mixed laser crystal of Nd:GdLaNbO4 (Nd:GLNO) was grown successfully by conventional Czochralski method. The unit cell parameters were obtained by Rietveld refinement method. The density of the as-grown cr...
-
Article
Basic properties of a new Nd-doped laser crystal: Nd:GdNbO4
A Nd-doped GdNbO4 single crystals have been grown successfully using the Czochralski technique. The chemical etching method was employed to study the defects in the structural morphology of Nd:GdNbO4 crystal with...
-
Article
Thermal, defects, mechanical and spectral properties of Nd-doped GdNbO4 laser crystal
A Nd-doped GdNbO4 crystal was grown successfully by Czochralski method. Its monoclinic structure was determined by X-ray diffraction; the unit-cell parameters are a = 5.38 Å, b = 11.09 Å, c = 5.11 Å, and β = 94.5...
-
Article
Crystal growth, defects, and mechanical and spectral properties of a novel mixed laser crystal Nd:GdYNbO4
A mixed laser crystal of Nd-doped GYNO crystal was grown successfully by Czochralski method. The crystal belongs to monoclinic system with space group I2/a, the structural parameters are obtained by the X-ray ...
-
Article
Spectroscopic properties and laser performance at 1,066 nm of a new laser crystal Nd:GdTaO4
A new laser medium Nd3+:GdTaO4 single crystal with high optical quality was grown successfully by the Czochralski method, and its high-efficiency laser operation at 1,066 nm was demonstrated for the first time. ...
