A5081559762- Advanced Fiber Laser Technologies
- Photorefractive and Nonlinear Optics
- Photonic and Optical Devices
- Solid State Laser Technologies
- Perovskite Materials and Applications
- Crystallization and Solubility Studies
- Advanced Fiber Optic Sensors
- X-ray Diffraction in Crystallography
- 2D Materials and Applications
- Photonic Crystals and Applications
- Optical Network Technologies
- Solid-state spectroscopy and crystallography
- Photonic Crystal and Fiber Optics
- Acoustic Wave Resonator Technologies
- Advanced Photonic Communication Systems
- Magneto-Optical Properties and Applications
- Optical Coatings and Gratings
- Plasmonic and Surface Plasmon Research
- Laser Material Processing Techniques
- Orbital Angular Momentum in Optics
- Ferroelectric and Piezoelectric Materials
- Semiconductor Lasers and Optical Devices
- Conducting polymers and applications
- Titanium Alloys Microstructure and Properties
- Peer-to-Peer Network Technologies
Fujian Normal University
2010-2024
University of Chinese Academy of Sciences
2021-2024
Fujian Institute of Research on the Structure of Matter
2014-2023
Chinese Academy of Sciences
2014-2023
Tan Kah Kee Innovation Laboratory
2022-2023
First Affiliated Hospital of Xi'an Jiaotong University
2022
Xi'an Jiaotong University
2022
Abstract X‐ray detectors with high sensitivity are of great significance in both civil and military fields. Over the past decades, efforts have been made to improve conventional inorganic materials, but mainly at cost increasing energy consumption a quite operating voltage. Developing photosensitive ferroelectrics directly as detector materials may be conceptually new strategy view strong ferroelectric spontaneous polarization ( P s ) that assists photoinduced carriers separation transport....
Overconsumption of carbohydrate-rich food combined with adverse eating patterns contributes to the increasing incidence metabolic syndrome (MetS) in China. Therefore, we conducted a randomized trial determine effects low-carbohydrate diet (LCD), an 8-h time-restricted (TRE) schedule, and their combination on body weight abdominal fat area (i.e., primary outcomes) cardiometabolic outcomes participants MetS. Compared baseline, all 3-month treatments significantly reduce subcutaneous area, but...
Abstract Photoexcited pyroelectricity in ferroelectrics allows the direct conversion of light radiation into electric signal without external power source, thus paving an avenue to promote optoelectronic device performances. However, it is urgently demanded exploit new with this attribute covering ultraviolet (UV)‐to‐infrared (IR) region for self‐powered photodetection. Herein, broadband light‐induced pyroelectric effects a 2D perovskite‐type ferroelectric, (BBA)2(EA)2Pb3Br10 (1; BBA =...
Abstract 2D organic–inorganic hybrid perovskites are emerging as the promising alternatives in photodetection, due to their unique merits stemming from intrinsic quantum‐confined structures. Despite great ongoing effects, highly sensitive and ultrafast responding photodetectors of remain a huge blank. Here, first nanosecond‐responsive array photodetector based on perovskite crystals (PA) 2 (G)Pb I 7 (where PA = n ‐pentylaminium G guanidinium) is fabricated, which features newly tailored...
In this paper, we demonstrate a novel all-fiber current sensor using ordinary silica fiber. The employs fiber solenoid as head, which improves the sensitivity by allowing optical signals to traverse head repeatedly. Theory and experiment prove that improvement in increases periodically with number of repetitions circulating round loop.
Optical phased arrays (OPAs) encounter a formidable trade-off between performance and design due to the intricacies of their system. Here, we propose cascaded domain engineering OPA structure via engineering. A six-layer prototype, consisting 32 array elements, was designed, fabricated, characterized. In contrast existing scheme, only one control electronics is used entire regardless number elements. The speed beam steering demonstrated up 3 MHz in bulk LiNbO3 (LN) demo, based on fast...
We report on electro-optic beam deflection using an annealed proton exchange waveguide in lithium niobate (LN) with microstructured serrated array electrodes. Due to the effect of LN material, experimental results show that and modulation can be realized relatively low voltages. The total length prism electrodes structure is ∼5 mm. With 20 V applied 50, 100, 150 μm wide waveguides, ∼1.28, ∼0.96, ∼0.64 deflections were obtained, respectively, which are accordance theoretical simulation. This...
Abstract We have proposed and experimentally demonstrated a novel scheme for efficient mid-infrared difference-frequency generation based on passively synchronized fiber lasers. The adoption of coincident seeding pulses in the nonlinear conversion process could substantially lower pumping threshold parametric emission. Consequently, picosecond source at 3.1 μm was prepared with watt-level average power, maximum power efficiency 77% realized from pump to down-converted light. Additionally,...
Through the mixed-cation alloying strategy, we have successfully introduced secondary DMA + cations in perovskite cages to design a new 2D Ruddlesden–Popper hybrid perovskite, showing great potential photodetection and polarization detection.
By confining the secondary dimethylammonium (DMA) cation in a distorted perovskite cavity, we assembled new 2D Ruddlesden-Popper metal halide of (i-BA)2(DMA)Pb2Br7 (i-BA = n-isobutylammonium), which DMA templates its inorganic framework and quantum-well motif renders fascinating photoresponse. Crystal-based planar arrays exhibit effective photodetection behaviors, including notable detectivity (∼5.6 × 1012 Jones), high responsivity (∼1.25 A W-1) large switching ratio (∼1.5 103). These...
A CMOS-compatible, broadband, and polarization-independent edge coupler for efficient chip coupling with standard single-mode fiber is proposed. Three layers of a silicon nitride waveguide array the same structures are used in top oxide cladding to achieve high efficiency simplify mode transformation structure. Optimal total loss at wavelength 1550 nm, -0.49dB TE polarization -0.92dB TM obtained. The -1dB bandwidth beyond 160 nm ∼130nm polarization, respectively. significant reduction...
A broadband and CMOS-compatible polarization beam splitter rotator (PSR) built on the silicon nitride-on-silicon multilayer platform is presented. The PSR realized by cascading a rotator, which are both subtly constructed with an asymmetrical directional coupler waveguide structure. advantage of this device that function can be directly in SiN layer, providing promising solution to diversity schemes photonic circuits. chip expected have high power handling capability as light input from...
Temperature and vibration robustness of a reflecting all-fiber current sensor (AFCS) using common single-mode fiber (SMF) are analyzed theoretically experimentally. The effect the birefringence condition sensing on temperature sensitivity AFCS is shown via theoretical models. an orthoconjugate retroreflector almost entirely independent fiber. Thus, this configuration preferable for SMF. experimentally observed AFCSs different fibers configurations support conclusion.
Abstract Near‐infrared (NIR) optical vortices (OVs), which carry specific orbital angular momentum, are believed to greatly increase the capacity of conventional communication systems. However, due equipment limits in invisible wavelengths, NIR OVs detection remains a great difficulty. Here, up‐conversion imaging technology is exploited circumvent using detectors. A lithium niobate crystal with its quadratic susceptibility modulated by specially designed Dammann vortex grating fabricated...
A high-efficiency broadband orange laser is demonstrated by use of double-pass sum-frequency mixing in a step-chirped MgO-doped periodically poled lithium niobate (MgO:PPLN) crystal (ᴧ = 10.1-10.4 µm). The temperature-gradient technique used to enhance the bandwidth output spectrum. maximum power 129 mW (~65% conversion efficiency) was achieved at room temperature operation, and up ~7.2 nm difference 20 ᵒC realized. This scheme presents an attractive approach for generation high...
In this Letter, we report an octave-spanning mid-infrared (MIR) comb generation with a difference frequency (DFG) approach optimized for aperiodically poled Mg:LiNbO3 and nonlinear spectral broadening. An Er:fiber is delivered to two branches amplified in Yb:fiber amplifier, respectively. We demonstrate that the two-branch DFG can yield spectrum tuned over octave fan-out periodically lithium niobate. Thus, obtain poling period profile design Mg:LiNbO3. The results broadband combs be...
A novel two-dimensional hybrid perovskite (IA) 2 (DMA)Pb Br 7 was obtained by introducing a large secondary cation DMA + into the PbBr 6 framework. highly efficient array photodetector has been assembled using its crystal.
Demodulation is a bottleneck for applications involving fiber Bragg gratings (FBGs). An overlap spectrum FBG sensor based on light power demodulation method presented in this paper. The uses two chirp FBGs (cFBGs) of which the reflection spectra partially each other. variation can be linked to changes measurand, and function realized via relationship. A temperature experiment showed that relationship between had good linearity agreed with theoretical analysis.
Abstract A four‐channel fiber loop ring‐down pressure sensor with temperature compensation based on neural networks is described.This makes use of the principle time division multiplexing, which consists series and parallel loops. The laser pulses from four‐channels can be acquired by only one detector four values are measured synchronously in our experiment. Taking mode dispersion multimode into consideration, maximum multiplexing number discussed. In addition, has been successfully used...