A5003799966- Advanced Fiber Laser Technologies
- Photonic Crystal and Fiber Optics
- Molecular Sensors and Ion Detection
- Laser-Matter Interactions and Applications
- Analytical Chemistry and Sensors
- Luminescence and Fluorescent Materials
- Advanced Fiber Optic Sensors
- Advanced biosensing and bioanalysis techniques
- Geology and Paleoclimatology Research
- Electrochemical sensors and biosensors
- Water Quality Monitoring and Analysis
- Gas Sensing Nanomaterials and Sensors
- Biosensors and Analytical Detection
- Methane Hydrates and Related Phenomena
- 2D Materials and Applications
- earthquake and tectonic studies
- Sulfur Compounds in Biology
- Quantum Dots Synthesis And Properties
- Geochemistry and Geologic Mapping
- Lanthanide and Transition Metal Complexes
- Geophysical and Geoelectrical Methods
- Metal-Organic Frameworks: Synthesis and Applications
- Geophysical Methods and Applications
- Geological and Geochemical Analysis
- RNA Interference and Gene Delivery
Shandong Academy of Sciences
2018-2024
Institute of Oceanographic Instrumentation
2018-2024
Qilu University of Technology
2018-2023
Shenzhen University
2016-2018
Ocean University of China
2017
The pulse energy in the ultrafast soliton fiber laser oscillators is usually limited by well-known wave-breaking phenomenon owing to absence of a desirable real saturable absorber (SA) with high power tolerance and large modulation depth. Here, we report type microfiber-based MoTe2 SA fabricated magnetron-sputtering deposition (MSD) method. High-energy free pulses were generated duration/pulse energy/average output 229 fs/2.14 nJ/57 mW 1.5 μm regime 1.3 ps/13.8 nJ/212 mW 2 μm regime,...
Two-dimensional (2D) layered transition metal dichalcogenides (TMDs) have attracted significant interest in various optoelectronic applications due to their excellent nonlinear optical properties. One of the most important TMDs is be employed as an extraordinary modulation material (e.g., saturable absorber (SA)) ultrafast photonics. The main challenge arises while embedding into fiber laser systems generate pulse trains and thus constraints practical applications. Herein, few-layered WS2...
A passively mode-locked thulium-doped fiber (TDF) laser was realized by employing chemical vapor deposited few-layer molybdenum ditelluride (MoTe2) as a saturable absorber (SA). The MoTe2 film transferred onto the waist of microfiber and then incorporated into TDF with typical all-fiber ring cavity configuration. Stable soliton pulses emitting at 1930.22 nm were obtained 3 dB bandwidth 4.45 nm, pulse duration 952 fs, an average power 36.7 mW.
In this Letter, high-quality WS2 film and MoS2 were vertically stacked on the tip of a single-mode fiber in turns to form heterostructure (WS2-MoS2-WS2)-based saturable absorbers with all-fiber integrated features. Their nonlinear absorption properties remarkable, such as large modulation depth (∼16.99%) small intensity (6.23 MW·cm-2). Stable pulses at 1.55 μm duration short 296 fs average power high 25 mW obtained an erbium-doped laser system. The results demonstrate that proposed...
Ultrafast pulse generation was demonstrated in a thulium-doped fiber laser mode-locked by magnetron-sputtering deposited WTe2 with modulation depth, nonsaturable loss, and saturable intensity of 31%, 34.3%, 7.6 MW/cm2, respectively. Stable soliton pulses could be obtained at 1915.5 nm central wavelength duration 1.25 ps, an average output power 39.9 mW, signal-to-noise ratio 95 dB. To the best our knowledge, this first demonstration WTe2-based absorbers lasers 2 μm regime.
We report the usage of chemical vapor deposition-grown monolayer WSe <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> as a saturable absorber (SA) for mode-locked thulium-doped fiber laser. The was transferred onto microfiber and then incorporated into typical all-fiber-integrated ring cavity configuration. Stable soliton pulses emitting at 1863.96 nm were obtained with pulse duration 1.16 ps, repetition rate 11.36 MHz, an average power...
With the magnetron-sputtering deposition method, α phase indium selenide (α-In2Se3) was developed into a saturable absorber (SA) with wideband absorption property at 800, 1560, and 1930 nm. After inserting α-In2Se3 SA erbium-doped fiber laser (EDFL) thulium-doped (TDFL) systems, we can easily obtain stable soliton pulse trains. The duration/pulse energy/slope efficiency for EDFL TDFL were 276 fs/2.03 nJ/15.8% 1.02 ps/7.1 nJ/23.5%, respectively. These results showed that MSD-grown could be...
We demonstrate an Er-doped fiber laser (EDFL) mode-locked by a MoS2 saturable absorber (SA), delivering 256 fs, 2 nJ soliton pulse at 1563.4 nm. The nonlinear property of the SA prepared magnetron sputtering deposition (MSD) is measured with modulation depth (MD) ∼19.48% and intensity 4.14 MW/cm2. To best our knowledge, generated has highest energy among reported EDFLs based on transition metal dichalcogenides (TMDs). Our results indicate that MSD-grown SAs could offer exciting platform for...
A ratiometric optical sensor has been developed with electrospinning processing method for dissolved oxygen measurement. The sensing film is fabricated by using silver nano-particles (Ag NPs) doped tris(4,7-diphenyl-1,10-phenanthroline) ruthenium(II) dichloride complex (Ru(DPP)₃Cl₂) encapsulated in plasticized polymethyl methacrylate (PMMA). An insensitive 3-(2-benzothiazolyl)-7-(diethy lamino)-(6CI,7CI) (Coumarin6) adopted as reference. ratio of oxygenation calculated at each image pixel a...
This paper presents a simple, high resolution imaging approach utilizing ratiometric planar optode for simultaneous measurement of dissolved oxygen (DO) and pH. The comprises plastic optical film coated with indicator Platinum(II) octaethylporphyrin (PtOEP) reference quantum dots (QDs) embedded in polystyrene (PS), pH 5-Hexadecanoylamino-fluorescein (5-Fluorescein) Hydromed D4 matrix. dyes are excited by an LED (Light Emitting Diode) source central wavelength 405 nm, the emission...
A pH sensor based on CTS UCNPs exhibits ratiometric responses from 4 to 7 according blue/red luminescence intensity ratios under 808 nm excitation.
Abstract We theoretically investigate the chiral topological excitons emerging in monolayer transition metal dichalcogenides, where a bulk energy gap of valley is opened up by position dependent external magnetic field. find two nontrivial states, which exactly connects to properties, i.e., Chern number = 2. The dependence spectrum on width field domain wall as well filed strength numerically revealed. are not only important excitonic transport due prevention backscattering, but also give...
The sensing mechanism toward Hcy/Cys is realized based on the condensation reaction, which breaks CN to form a thiazolidine adduct.
We synthesize lipophilic, highly efficient, and pH-insensitive oleic acid-modified quantum dots (QDs) with maximum emission at a wavelength of 628 nm. The pH sensing film is fabricated by encapsulating 5-hexadecanoylamino-fluorescein QDs as the reference in D4-hydromed plasticized polystyrene. Using light-emitting diode central 410 nm an excitation source, it shown that wavelengths sensitive indicator dye have no spectral overlap match respectively channels 3CCD (RGB) camera low cross-talk....