A5041711642- Photonic Crystal and Fiber Optics
- Advanced Fiber Laser Technologies
- Advanced Fiber Optic Sensors
- Solid State Laser Technologies
- Laser-Matter Interactions and Applications
- Optical Network Technologies
- Photonic and Optical Devices
- Semiconductor Lasers and Optical Devices
- Glass properties and applications
- Spectroscopy and Laser Applications
- Advanced Optical Sensing Technologies
- Organic Electronics and Photovoltaics
- Advanced Sensor and Energy Harvesting Materials
- Dielectric materials and actuators
- Organic Light-Emitting Diodes Research
- Laser Design and Applications
- Flame retardant materials and properties
- Laser-Plasma Interactions and Diagnostics
- Laser-induced spectroscopy and plasma
- Power Systems and Technologies
- Molecular Junctions and Nanostructures
- Geomagnetism and Paleomagnetism Studies
- Ionosphere and magnetosphere dynamics
- Polymer composites and self-healing
- High-Voltage Power Transmission Systems
University of Electronic Science and Technology of China
2016-2025
Lanzhou Jiaotong University
2025
Xihua University
2024
National Engineering Research Center of Electromagnetic Radiation Control Materials
2012-2023
Jiangsu Institute of Meteorological Sciences
2022
Chengdu University of Information Technology
2021-2022
China Academy of Engineering Physics
2012-2019
Chengdu University
2019
Hefei University of Technology
2017
China Electronics Technology Group Corporation
2017
Single-walled carbon nanotube (SWNT) films on flexible PET (polyethyleneterephthalate) substrates are used as transparent, anodes for organic light-emitting diodes (OLEDs). For polymer-based OLEDs having the structure: SWNT/PEDOT−PSS:MeOH/TFB (poly(9,9-dioctylfluorene-co-N-(4-butylphenyl)diphenylamine)) + TPD−Si2 (4,4'-bis[(p-trichlorosilylpropylphenyl)phenylamino]biphenyl) /BT (poly(9,9-dioctylfluorene-co-benzothiadiazole))/CsF/Al, a maximum light output of 3500 cd/m2 and current efficiency...
Abstract Black phosphorus (BP) as a novel class of two-dimension (2D) materials has recently attracted enormous attention result its unique physical and chemical features. The remarkably strong light-matter interaction tunable direct band-gap at wide range make it an ideal candidate especially in the mid-infrared wavelength region saturable absorber (SA). In this paper, simple effective liquid phase exfoliation (LPE) method was used to fabricate BP. By introducing same BP SA into two...
We report an 1150-nm diode-pump passively Q-switched Ho3+-doped ZBLAN fiber laser using topological insulator (TI): Bi2Te3 as the saturable absorber (SA). The TI: prepared cost-effective hydrothermal intercalation/exfoliation method was dropped onto a CaF2 substrate to fabricate free-space SA component. It has low peak intensity of 2.12 MW/cm2 and high modulation depth 51.3% measured at 2 μm. Inserting this component into linear-cavity laser, stable pulses 2979.9 nm were obtained with...
Pulsed lasers operating in the mid-infrared (3-25 µm) are increasingly becoming light source of choice for a wide range industrial and scientific applications such as spectroscopy, biomedical research, sensing, imaging, communication. Up to now, one factors limiting pulsed is lack optical switch with capability pulse generation, especially those wideband response. Here, semiconductor material bismuth oxyselenide (Bi2 O2 Se) facile processibility, constituting an ultrabroadband saturable...
We demonstrate a passively Q-switched erbium-doped fiber laser (EDFL) based on few-layer MoS <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> as saturable absorber (SA). Few-layer is prepared by the chemical vapor deposition method. The transferred onto end face of connector to form fiber-compatible -based SA. saturation intensity and modulation depth SA are measured be 0.43 MW/cm <sup xmlns:xlink="http://www.w3.org/1999/xlink">2</sup>...
We demonstrate an all-fiber Tm 3+ -doped silica fiber laser operating at a wide selectable wavelength range by using different Bragg gratings (FBGs) as selection elements.With specifically designed high reflective (HR) FBG and the end output coupler, lasing in from 1975 nm to 2150 with slope efficiency of >30% can be achieved.By employing low (LR) obtainable wavelengths were extended between 1925 2200 which is reported longest lasers.Furthermore, array cavity inducing bend loss adjacent FBGs...
In this letter, we demonstrate a passively Q-switched Ho3+/Pr3+ co-doped fluoride fiber laser centered at 2865.7 nm using tungsten disulfide (WS2) saturable absorber (SA) for the first time, to best of our knowledge. A multilayer WS2 film was fabricated sulfidation grown method and then transferred onto an Au mirror act as cavity feedback SA device in linear cavity. Under launched pump power 318.5 mW, stable pulses with average output 48.4 mW were achieved pulse duration 1.73 µs repetition...
A high-power diode-cladding-pumped Ho³⁺-doped fluoride glass fiber laser operating in cascade mode is demonstrated. The ⁵I₆→⁵I₇ and ⁵I₇→⁵I₈ transitions produced 0.77 W at a measured slope efficiency of 12.4% 0.24 5.2%, respectively. Using long length, which forced large threshold for the transition, wavelength 3.002 μm was maximum output power, making this system first watt-level mid-IR.
We experimentally demonstrate a long-term stable two-dimensional saturable absorption material under ambient conditions—multi-layer antimonene feasible for the mid-infrared spectral region—for first time to our knowledge. The multi-layer prepared using liquid-phase exfoliation method was coated on quartz/CaF2 characterizations and an Au mirror as reflection-type absorber (SA) device. It has modulation depth of 10.5%, saturation peak intensity 0.26 GW/cm2, non-saturation loss 19.1% measured...
We demonstrate a self-starting dual-wavelength mode-locked fiber laser at 2 μm spectral region by using taper in Tm3+-doped ring cavity. The fabricated with flame brushing technique was used as periodic filter modulation depth of ~3.61 dB and period ~7.3 nm, respectively. Diverse regimes including continuous wave (CW)/multi-soliton, soliton/multi-soliton, soliton/soliton were obtained adjusting pump power. Wavelength tuning for the also precisely controllable through stretching carefully....
Numerical modeling of heavily-erbium-doped fluoride fiber lasers is presented. Calculations from the model were compared with all previously reported experimental demonstrations lasers. Commensurate recent studies, good agreement measurements was achieved use scaled-down rate parameters for energy transfer that corresponds to weaker interactions between Er <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3+</sup> ions. For wavelength-fixed...
Cascading the <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">4</sup> I <sub xmlns:xlink="http://www.w3.org/1999/xlink">11/2</sub> → xmlns:xlink="http://www.w3.org/1999/xlink">13/2</sub> transition at 2.8 μm and xmlns:xlink="http://www.w3.org/1999/xlink">15/2</sub> 1.6 offers a solution to thermal management of high power Er xmlns:xlink="http://www.w3.org/1999/xlink">3+</sup> -doped fluoride fiber lasers. We demonstrate an output 8.2 W from...
We demonstrate a stable conventional soliton in Tm-doped hybrid mode-locked fiber laser by employing homemade all-fiber Lyot filter (AFLF) and single-wall carbon nanotube. The AFLF, designed sandwiching piece of polarization-maintained (PMF) with two 45° tilted gratings inscribed UV PMF phase-mask scanning technique, shows large depth ∼9 dB small insertion loss ∼0.8 dB. By optimizing the free spectral range Kelly sidebands centered at 1966.4 nm can be dramatically suppressed without...
We demonstrate a gain-switched fiber laser, yielding maximum average power of 1.04 W at 3.46 μm, which is the current record pulsed rare-earth-doped laser wavelength beyond 3 to our knowledge. The corresponding pulse energy 10.4 μJ with repetition rate 100 kHz. A dual-wavelength pumping scheme consisting home-made 1950 nm passively Q-switched system μs-scale width. 976 continuous wave diode was used gain-switch double-cladding Er-doped ZBLAN cavity. Possible laser-quenching behavior during...
In this article, we demonstrate great potential of lightly-erbium(Er <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3+</sup> )-doped ZrF <sub xmlns:xlink="http://www.w3.org/1999/xlink">4</sub> fiber in efficient power scaling at ∼2.8 μm, when excited ∼1.7 μm. Core-pumped by a random Raman laser 1.69 the 1.5 mol.% Er -doped F-P cavity has experimentally yielded an output >6 W 2.783 μm with slope efficiency up to 58.4% (with respect absorbed...
We present the first widely tunable passively Q-switched Dy3+-doped ZBLAN fiber laser around 3 μm pumped at 1.1 using PbS nanoparticles as saturable absorber (SA) to our knowledge. At 2.87 μm, modulation depth and saturation intensity of SA were measured be 12.5% 1.10 MW/cm2, respectively. Stable Q-switching was achieved over a wavelength range 2.71-3.08 (∼370 nm), which is record tuning from pulsed rare-earth-doped laser, A maximum output power 252.7 mW obtained, with pulse energy 1.51 μJ,...
Abstract Cascade transitions of rare earth ions involved in infrared host fiber provide the potential to generate dual or multiple wavelength lasing at mid-infrared region. In addition, fast development saturable absorber (SA) towards long wavelengths motivates realization passively switched pulsed lasers. this work, by combing above two techniques, a new phenomenon Q-switched ~3 μm and gain-switched ~2 pulses shared cavity was demonstrated with Ho 3+ -doped fluoride specifically designed...
Cotton fabrics with the main constituent of cellulose, which is hydrophilic, bacterial infected, and flammable, are in urgent need functionalization as a kind widely applied material. To address these issues, this work, modified polyelectrolyte complex (MPEC) coatings polyethylenimine (PEI), polyphosphate (APP), perfluorodecyltrichlorosilane PEI (PFTS-PEI) prepared to construct multi-functionally gradient MPEC on cotton fabrics. Stability synergistic effects hydrophobicity, antibacterial...
Poly(vinylidene fluoride) (PVDF) polymers are considered as promising high energy density capacitor dielectrics because of their dielectric constants and melt processability. However, industrialization practicalization suffer from low breakdown strengths leakage conduction losses. Hence, it is great necessity to develop with a storage capability. Herein, we fabricated biaxially oriented nanocomposite PVDF films decorated ultralow contents surface-functionalized boron nitride nanosheets...
Deep ultraviolet (DUV) photodetection usually relies on wide-bandgap semiconductors, which however face challenges in material growth and doping processes. In this work, we proposed validated a scheme based tunneling barrier modulation, achieving highly sensitive DUV photodetection. Using two-dimensional van der Waals heterostructure, the device integrates MoS2 as transporting layer for its high carrier mobility low dark current, few-layered graphene (FLG) photon absorption layer, hexagonal...
A diode-cladding-pumped dual wavelength Q-switched Ho3+-doped fluoride cascade fiber laser operating in the mid-infrared is demonstrated. Stable pulse trains from (5)I6 → (5)I7 and (5)I8 transitions were produced, μs-level time delay between pulses each transition was dependent on pump power. At maximum power at an acousto-optic modulator repetition rate of 25 kHz, operated 3.005 μm, a energy 29 μJ, width 380 ns; correspondingly produced 7 μJ 260 ns 2.074 μm. To best our knowledge, this...
We report a tunable passively Q-switched Ho(3+)-doped ZBLAN fiber laser at 3 μm waveband using Fe(2+):ZnSe crystal as saturable absorber (SA) and plane ruled grating in Littrow configuration wavelength tuning element. Stable pulse trains with ~85 nm range from 2919.1 to 3004.2 spectrum bandwidths of ~1 were achieved for the an initial transmission (IT) 69%. Pulse duration increased 1.23 μs 2.35 repetition rate decreased 96.1 kHz 43.56 extension towards long direction. With IT increasing 79%...
We combine all the known experimental demonstrations and spectroscopic parameters into a numerical model of <formula formulatype="inline" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"><tex Notation="TeX">${\rm Ho}^{3+}$</tex></formula> -doped fluoride glass fiber laser system. Core-pumped cladding-pumped arrangements were simulated for population-bottlenecking mitigation schemes that have been tested, good agreement between previously reported...