A5014814309- Advanced Fiber Laser Technologies
- Photonic Crystal and Fiber Optics
- Advanced Fiber Optic Sensors
- Photonic and Optical Devices
- Semiconductor Lasers and Optical Devices
- Laser-Matter Interactions and Applications
- Analytical chemistry methods development
- Solar-Powered Water Purification Methods
- Surface Modification and Superhydrophobicity
- Membrane Separation Technologies
- Laser Material Processing Techniques
- Quantum Information and Cryptography
- Optical Coherence Tomography Applications
- Laser-induced spectroscopy and plasma
- Laser-Ablation Synthesis of Nanoparticles
- Advanced Sensor and Energy Harvesting Materials
- Quantum Computing Algorithms and Architecture
- Spectroscopy and Laser Applications
- Electrospun Nanofibers in Biomedical Applications
- Conducting polymers and applications
- Optical Network Technologies
- Quantum-Dot Cellular Automata
- Semiconductor Quantum Structures and Devices
- Membrane-based Ion Separation Techniques
- Mercury impact and mitigation studies
Chongqing University of Posts and Telecommunications
2016-2024
Qilu University of Technology
2022-2024
Chinese Academy of Forestry
2024
Shandong Academy of Sciences
2022-2024
Institute of Chemical Industry of Forest Products
2024
Southwest University
2007-2008
A fiber-optic Fabry–Perot acoustic sensor system based on an improved wavelength tuning stabilization technique is presented. The achieved by periodically using a tunable distributed feedback laser. performance of the developed was verified tests. Experimental results demonstrate that sensitivity, dynamic range, and min detectable sound pressure level (SPL) are 92 mV/Pa, 96 dB, 7 dB-SPL at 1 kHz, respectively. suitable for weak sensing.
Based on the framework of spin-flip model (SFM) for GHz level modulation frequency, polarization performances current-modulated vertical-cavity surface-emitting lasers (VCSELs) subject to weak optical feedback have been theoretically investigated. The results show that, type 1 switching (PS), influences intensity and current amplitude high-frequency response is not obvious. For low-frequency modulation, will result in output a VCSEL having rich dynamics. A new style PS can be obtained under...
Abstract Nanofiltration (NF) membranes circumventing global water scarcity with excellent separation and antibacterial performances are highly desirable for efficient treatment but remain a great challenge. Herein, nanofiltration membrane was fabricated by in situ immobilizing silver nanoparticles (AgNPs) on sulfated cellulose nanofibril incorporated during interfacial polymerization. AgNPs were confirmed to be uniformly distributed grown (SCNF) due its abundant sulfate hydroxyl groups...
Hydrogels have attracted much attraction for promising flexible electronics due to the versatile tunability of properties. However, there is still a big obstacle balance between multi-properties and performance wearable electronics. Herein, we propose salt-percolated nanocellulose composite hydrogel which was fabricated via radical polymerization with acrylic acid as polymer networks (NaCl-CNCs-PAA). CNCs were utilized reinforcing agent enhance mechanical properties hydrogel. Moreover,...
Using graphene-covered-microfiber (GCM) as a saturable absorber, the generation and evolution of multiple operation states are proposed demonstrated in passively mode-locked thulium-doped fiber laser. The microfiber was fabricated using flame brushing method to an interaction length ∼ 1.2 cm with waist diameter 10 μm. Graphene layers were grown on copper foils by chemical vapor deposition transferred onto polydimethylsiloxane (PDMS) form PDMS/graphene film, which allowed light-graphene via...
A novel multifunctional material with efficient wicking and evaporative functionalities was fabricated using hierarchical surface nano-/microstructuring by femtosecond laser micromachining. The created exhibits excellent performance. Our experiments in a wind tunnel demonstrate its good under the conditions of high-temperature airflows. An important finding this work is significantly enhanced evaporation rate compared free water surface. obtained results provide platform for practical...
We demonstrated a 2- passively mode-locked nanosecond fiber laser based on MoS2 saturable absorber (SA). Owing to the effect of nonlinear absorption in SA, pulse width decreased from 64.7 13.8 ns with increasing pump power 1.10 1.45 W. The use narrow-bandwidth Bragg grating resulted central wavelength and 3-dB spectral bandwidth 2010.16 0.15 nm, respectively. Experimental results show that is promising material for laser.
A hollow anode-solution cathode glow discharge (HA-SCGD) was designed as a plasma excitation source for optical emission spectrometry. The operation parameters such the current, argon flow rate and solution were investigated. spatial distribution profiles of normalized results spectral bands lines investigated analyzed. detection limits Na, Li, K, Ca, Mg, Pb, Sr, Mn, Rb, Cs Zn 0.22, 0.69, 1.33, 240.37, 21.55, 529, 619.43, 209.51, 2.94, 7.13 206.95 µg L−1, respectively. repeatability,...
To reduce the time complexity of quantum morphology operations, two kinds improved dilation and erosion operations are proposed. Quantum parallelism is well used in design these operations. Consequently, greatly reduced compared with previous The neighborhood information each pixel needed process designing In order to get information, position shifting transformation utilized, which can make store a image set. this set, at location ([Formula: see text], [Formula: text]) stored same other...
Renewable evaporative energy from atmospheric air is a recently emerged research field that demonstrates the great potential for significant savings in conditioning of buildings, data/big-data/integrated-big-data centers, agricultural storage facilities, and greenhouses. Here, we develop method an essential increase harvesting efficiency renewable by enhancing water evaporation rate through shaping air-water interface (AWI) menisci formed superhydrophilic hierarchical surface...
In this paper, a multistate passively mode-locked thulium-doped fiber laser with nonlinear amplifying loop mirror is reported. An ultra-high numerical aperture employed to compensate the cavity abnormal dispersion, and net dispersion value fixed at −0.046 ps2. By changing pump power, three different regions, namely Q-switched mode-locking operation, dual-wavelength are observed sequentially. When power raised threshold of 1.60 W, transition state mode locking begins be observed. increases...
In this article, molybdenum diselenide (MoSe2) was fabricated by chemical vapor deposition (CVD) with a modulation depth of about 7.3% and nonsaturable loss 30.6%. Bright-dark soliton pairs have been obtained in thulium-holmium-doped fiber ring laser based on MoSe2 as saturable absorber (SA) for the first time, to best our knowledge. The results not only prove that can be used an excellent field ultra-fast optics, but also provide certain reference value future research bright-dark...
Based on the framework of spin-flip model （SFM）, synchronization performance two unidirectionally coupled vertical-cavity surface emitting lasers （VCSELs） subject to negative optoelectronic feedback has been theoretically investigated. The results show that, with increase intensity, laser output power displays different chaos regions, i. e., singles-polarization mode region and mixed region. polarized in single can achieve good synchronization, but sharply decline quality close Within...
The Tm-doped mode-locked pulsed fiber lasers, which are known for their wide applications in optical communication, laser medical system and special material processing, have attracted considerable interest as novel sources. Up to now, many reported lasers focused on emitting picosecond or femtosecond pulses at a few megahertz (MHz) repetition rate. Actually, due the strong chirp, large pulse width, low peak power little nonlinear phase accumulation characteristics process of amplifier,...
We experimentally demonstrated a stable multi-wavelength bright–dark pulse pair in mode-locked thulium-doped fiber laser (TDFL). The nonlinear polarization rotation (NPR) and optical loop mirror (NOLM) were employed figure-eight cavity to allow for mode-locking operation. By incorporating different lengths of high birefringence polarization-maintaining (PMF), the could operate stably emission state. Compared with absence PMF, effect caused by PMF resulted rich spectra better intensity...