A5103129292- Photorefractive and Nonlinear Optics
- Glass properties and applications
- Solid State Laser Technologies
- Advanced Fiber Laser Technologies
- Luminescence Properties of Advanced Materials
- Photonic and Optical Devices
- Optical Network Technologies
- Photonic Crystal and Fiber Optics
- Advanced Fiber Optic Sensors
- Laser Material Processing Techniques
- Radiation Detection and Scintillator Technologies
- Magneto-Optical Properties and Applications
- Advanced ceramic materials synthesis
- Diamond and Carbon-based Materials Research
- Advanced Photocatalysis Techniques
- Phase-change materials and chalcogenides
- Semiconductor Lasers and Optical Devices
- Hemoglobin structure and function
- Photonic Crystals and Applications
- Acoustic Wave Resonator Technologies
- Sensor Technology and Measurement Systems
- Nuclear materials and radiation effects
- Heme Oxygenase-1 and Carbon Monoxide
- Ferroelectric and Piezoelectric Materials
- Luminescence and Fluorescent Materials
Baoji University of Arts and Sciences
2014-2024
Center for High Pressure Science & Technology Advanced Research
2018
Xi'an Institute of Optics and Precision Mechanics
2014
University of Chinese Academy of Sciences
2014
Shaanxi University of Science and Technology
2009
University of Illinois Urbana-Champaign
1988
Fourier transform infrared spectroscopy of the CO stretch bands in carbonmonoxymyoglobin (MbCO) reveals three major implying that MbCO exists substates, A0, A1, and A3. After photolysis at low temperatures is heme pocket, resulting represent B substates. Photoselection experiments determine orientation A (bound) (photolyzed) substates: Small fractions are photolyzed 10 K with linearly polarized light 540 nm. The linear dichroism IR yields tilt angle between normal CO. average angles as...
Optical planar waveguides in Nd3+-doped phosphate glasses are fabricated by a 6.0-MeV carbon ion implantation with dose of 6.0×1014 ions/cm2 and oxygen at fluence ions/cm2, respectively. The guided modes the corresponding effective refractive indices were measured modal 2010 prism coupler. index profiles analyzed based on stopping range ions matter RCM reflectivity calculation method. near-field light intensity distributions simulated an end-face coupling method finite-difference beam...
An ultrashort polarization splitter based on dual-core photonic crystal fibers with gold wire has been proposed. Based the beam propagation method anisotropic perfectly matched layers, its coupling length, length ratio, extinction ratio (ER), and bandwidth are numerically investigated. When thread is filled in fiber, surface of will produce plasmon polaritons, which certain influence propagation. A shorter greater working can be obtained by filling wire. Numerical results demonstrate that...
We propose a new polarization splitter (PS) based on Ti and liquid infiltrated photonic crystal fiber (PCF) with high birefringence. Impacts of parameters such as shape size the air holes in cladding filling material are investigated by using vector beam propagation method. The results indicate that PS offers an ultra-short length 83.9 μm, extinction ratio −44.05 dB, coupling loss 0.0068 dB at 1.55 μm. Moreover, higher than −10 is achieved bandwidth 32.1 nm.
NaYF4:Yb,Er@NaYF4 core-shell nanostructures were prepared to investigate their influence on upconversion (UC) luminescence. Tests revealed green radiation (4S3/2→4I15/2) and red (4F9/2→4I15/2) first increased then gradually decreased as Yb concentration in the NaYF4 shell. The strongest fluorescent occurred at an of 5%. To complicated variation luminescence, we designed a set experiments study impact ion luminescence intensity, analyzed corresponding enhancement mechanism. It is probable...
Neodymium-doped calcium niobium gallium garnet (Nd:CNGG) waveguide operated at 632.8 nm is demonstrated by the 3.0-MeV oxygen-ion implantation with a fluence of [Formula: see text] ions/cm 2 . The annealing treatment 300[Formula: text]C for 45 min carried out to optimize quality. dark-mode spectra are measured text]-line technique. refractive index profiles calculated from effective indices modes. near-field intensity distributions simulated based on reconstructed profiles. process could...
A series of phosphate glasses with compositions 30SrO-60P2O5-10Na2O-0.5Tm2O3-xYb2O3(x = 0, 1, 5, 9, 11 in mol%) were manufactured by melt-casting method, the quantum cutting between Tm3+ and Yb3+ is investigated, energy transfer from Tm3+:1G4 to Yb3+:2F5/2 proved. According calculate, highest efficiency up 159.9%, emission wavelength at 1020 nm, matching band gap a silicon solar cell well, therefor, these could potentially be used cells.
We propose a rectangular liquid-infiltrated dual-core polymer optical fiber (POF) for short-range communication systems by the beam propagation method (BPM). The POF multi/demultiplexer (MUX/DEMUX) at wavelengths of 0.52/0.65-μm, 0.57/0.65-μm, and 0.52/0.57-μm are devised. simulation results demonstrate that ultrashort length three couplers 183.6 μm, 288 799.5 μm. Compared with conventional couplers, these could have significant applications in miniaturization devices visible light communication.
A planar waveguide is demonstrated in the Yb 3+ -doped tellurite glass, using (5+6) MeV O ion implantation with doses of (4+8)×10 14 ions/cm 2 . The process ions into glass simulated by stopping and range matter (SRIM) 2010 code. dark-mode spectra are measured prism-coupling system at λ = 632.8 nm. reflectivity calculation method finite-difference beam propagation used to calculate refractive index profile modal transverse electric (TE) mode fabricated waveguide, respectively. absorption...
In this work, we report on the preparation and characterization of planar ridge optical waveguides in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"> <mml:mrow class="MJX-TeXAtom-ORD"> <mml:msup> <mml:mi mathvariant="normal">E</mml:mi> mathvariant="normal">r</mml:mi> </mml:mrow> <mml:mn>3</mml:mn> <mml:mo>+</mml:mo> </mml:msup> </mml:math> -doped germanate glass by combining hydrogen ion implantation precise diamond blade dicing. The nuclear energy loss depth were...
Series of (90% – x) TeO2 10% TiO2 x Bi2O3 (x = 0, 5 and 10 mol %) tellurite laser glasses doped by Yb2O3 were prepared. The spectroscopic properties characterized the Raman spectrum, absorption spectrum fluorescence decay curves, respectively. research achievements show that with increase Bi2O3, emission cross-section increases from 1.20 to 1.31 pm2, lifetime decreases 0.68 0.65 ms firstly, then 0.70 ms. These system 80% TeO2-10% TiO2-10% may have potential be used as large gain medium for...
We report on the fabrication of waveguides in fused silica using 4.5-MeV nitrogen ion implantation with a fluence 5.0×1014 ions/cm2. The prism-coupling method was employed to measure effective refractive indices guiding modes at wavelengths 632.8 and 1539 nm. first few were higher than that substrate. index profiles nm reconstructed by reflectivity calculation method. Positive changes induced waveguide layers. end-face coupling used near-field light intensity distributions wavelength...
A series of oxyfluoride glasses with the compositions 75 mol% TeO2, 10 Nb2O5, (15 mol%−x) BaO, x BaF2 (x = 0 mol%, 5 15 mol%) doped Yb2O3 were prepared by melt-quenching method. Their emission cross-sections, fluorescence lifetimes, and gain properties investigated using absorption spectra decay curves. The results show that substituting for cross-section decreases from 1.37 pm2 to 1.21 pm2, lifetime increases 0.71 ms 0.96 ms. These indicate this tellurite glass may have potential uses as...