A5027089264- Glass properties and applications
- Luminescence Properties of Advanced Materials
- Solid State Laser Technologies
- Photonic Crystal and Fiber Optics
- Advanced Fiber Laser Technologies
- Photorefractive and Nonlinear Optics
- Optical Network Technologies
- Advanced Fiber Optic Sensors
- Photonic and Optical Devices
- Laser-Matter Interactions and Applications
- Lanthanide and Transition Metal Complexes
- Phase-change materials and chalcogenides
- Photonic Crystals and Applications
- Carbon and Quantum Dots Applications
- Pigment Synthesis and Properties
- Optical properties and cooling technologies in crystalline materials
- Laser Material Processing Techniques
- Surface Roughness and Optical Measurements
- ZnO doping and properties
- Random lasers and scattering media
- Ocular and Laser Science Research
- Quantum optics and atomic interactions
- Ga2O3 and related materials
- Radiation Detection and Scintillator Technologies
- Image and Video Quality Assessment
Huazhong University of Science and Technology
2013-2024
Wuhan National Laboratory for Optoelectronics
2012-2024
Hefei University of Technology
2023
Shanghai Institute of Optics and Fine Mechanics
2002-2005
Chinese Academy of Sciences
2002-2004
We report on a new kind of white light emitting glass suitable for long-wavelength ultraviolet excitation by simultaneously blue, green and red fluorescence, which is fabricated melting Ce(3+)-Tb(3+)-Mn(2+) co-doped borosilicate glass. The spectroscopic properties singly, doubly triply doped glasses have been reported the energy transfer from Ce(3+) to Tb(3+) Mn(2+) has also investigated. By adjusting concentration different co-dopants, we obtained ideal with color coordinate (x = 0.318, y 0.333).
The spectroscopic properties of erbium-doped silicon dioxide, bismuth oxide, and sodium oxide glasses are investigated based on Judd–Ofelt analysis for absorption spectra, bandwidth emission lifetime measurements the 4I13/2 level Er3+. effects these three optical parameters discussed in terms local basic nature glass, variations ligand fields about Er3+ sites, phonon energy refractive index glass host, respectively. data obtained suggest that does not have a promising composition use with...
To tailor clusters of active ions in glasses is laborious but critical for obtaining high efficient luminescence. Here, we present a facile method to by using one kind porous host, the nanoporous silica glass. The white light-emitting were prepared sintering impregnated with Ce3+, Tb3+, Mn2+ and Al3+ ions. combination blue, green red emissions Tb3+ under ultraviolet light excitation create emissions. fluorescence long-wavelength are dependent on energy transfer processes between ions; plays...
We have demonstrated a helical long-period grating (HLPG) manufactured from multicore fiber (MCF) combined with twist and CO2-laser heating technology. The MCF we used behaves as kind of single mode fiber. nineteen cores are distributed hexagonally which make the structure only exist in core area after twisting. There several strong couplings between cladding modes at different wavelengths when pitch was 900 µm. extinction ratio main coupling reached 20 dB 1550 nm. investigated sensor...
The effect of Yb(3+) concentration on the broadband emission intensity and peak wavelength shift in Yb/Bi ions co-doped silicate glasses is investigated. optimal Bi(2)O(3) range about 2.0-2.5 mol% 65SiO(2)-10Al(2)O(3)-25CaO matrix (SAC glasses). For codoped SAC glasses, maximum excited by 980 nm LD ~30 times 1.5 higher than that single Bi-doped 808 LD, respectively, shows obvious red-shift from 1185 to 1235 band with Yb(2)O(3) change 0 3.0 mol%. same measured fluorescence lifetime near 1020...
We report on a new kind of green-emitting high silica luminous glass, which is fabricated by sintering Ce(3+)-Tb(3+) co-doped porous glass. The spectra show that there are energy transfer between Ce(3+) and Tb(3+), cross-relaxation (5)D(3) (5)D(4) level Tb(3+). process can be adjusted addition Ca(2+) into the rate enhanced about four times than role has been discussed, fluorescence decay curve reveals play an important in transfer.
Various Er/Ce co-doped SiO2-Al2O3-CaO glasses are prepared by the melt-quenching method. The radiation resistance of is investigated under 5 kGy gamma-ray irradiation. absorption spectra, up-conversion fluorescence intensity and lifetime before after irradiation measured analyzed in details. induced (RIA) silicate can be suppressed due to Ce ions co-doping. have no apparent change Furthermore, possible mechanism effect on improvement discussed. result indicates that Er doped with an optimal...
A heterostructured cladding solid-core photonic bandgap fiber (HCSC-PBGF) is designed and fabricated which supports strong core mode transmission in a wide bandgap. An in-line Mach-Zehnder interferometer (MZI) curvature sensor constructed by splicing single fibers at both ends of HCSC-PBGF. Theoretical analysis this design has been implemented, the simulation results are consistent with experiment results. Benefiting from design, an enhanced sensing sensitivity 24.3 nm/m-1 range 0-1.75 m-1...
Upconversion (UC) materials have shown many applications in the solar cell industry, biomedical imaging, and LED lighting. For first time, we report enhanced UC Er3+/Yb3+-codoped silica glasses induced by energy transfer between rare earth ions indium tin oxide nanoparticles (ITO NPs), introduced an situ growth approach. The enhancements of intensities emissions red green light were all more than 10 fold some cases up to 42 fold. This work our opinion has contributed a novel method for...
Highly enhanced photoluminescence of Eu<sup>3+</sup> achieved by co-doping SnO<sub>2</sub> nanocrystals in mesoporous silica glasses.
Using nanosphere lithography and pulsed laser deposition, Au nanoparticles with different height have been fabricated on quartz substrates. The surface images of particles were observed by scanning electron microscopy, the results showed that prism-shaped form a periodical array. In U-V-visible absorption spectrum, strong peaks due to plasmon resonance observed. Furthermore, theoretical calculation based discrete dipole approximation was performed. experimental show nanoprism shifted blue...